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HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                <body>
   <div class="floor">
      <div class="tatami__mat">
         <div class="tatami__mat__piece tatami__mat__piece--column--1"></div>
         <div class="tatami__mat__piece tatami__mat__piece--column--2--row--1 tatami__mat__piece--reverse--mat"></div>
         <div class="tatami__mat__piece tatami__mat__piece--column--2--row--2 tatami__mat__piece--reverse--mat">
            <div class="tatami__mat__piece__container">
               <div class="floor__shadow"></div>
               <div class="go__board__bowl__area go__board__bowl__area--white">
                  <div class="go__board__bowl__container">
                     <div class="go__board__bowl">
                        <div class="go__board__bowl__wood__pattern__container go__board__bowl--wood--align--bottom">
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--1"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--2"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--3"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--4"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--5"></div>
                        </div>
                        <div class="go__board__bowl__lid__area">
                           <div class="go__board__bowl__inner__space">
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner__space__level--1">
                                 <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--1"></div>
                                 <div class="go__board__stones__container">
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner__space__level--2">
                                 <div class="go__board__stones__container">
                                    <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--2"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner__space__level--3">
                                 <div class="go__board__stones__container">
                                    <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--3"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--H2" id="go__board__stone--bowl--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--H3" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--E7" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--E6" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--F4" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--J2" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--G4" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--G3" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--11"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--F5" id="go__board__stone--bowl--inner--space--pos--12"></div>
                                 </div>
                              </div>
                           </div>
                           <div class="go__board__bowl__lid">
                              <div class="go__board__bowl__lid__side go__board__bowl__lid__side--top">
                                 <div class="go__board__bowl__wood__pattern__container">
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--1"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--2"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--3"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--4"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--5"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--6"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--7"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--8"></div>
                                    <div class="go__board__bowl__wood__pattern__2" id="go__board__bowl__wood__pattern__2--line--9"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__lid__side go__board__bowl__lid__side--inner--space">
                                 <div class="go__board__bowl__wood__pattern__container">
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--1"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--2"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--3"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--4"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--5"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--6"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--7"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--8"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--9"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--10"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--11"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--12"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--13"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--14"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--15"></div>
                                    <div class="go__board__bowl__wood__pattern__1 go__board__bowl__wood__pattern__1--variation" id="go__board__bowl__wood__pattern__1--variation--line--16"></div>
                                 </div>
                                 <div class="go__board__bowl__lid__side__inner__space__shadow"></div>
                                 <div class="go__board__bowl__lid__side__inner__space__border"></div>
                              </div>
                           </div>
                        </div>
                     </div>
                     <div class="go__board__bowl__lid__area go__board__bowl__lid__area--shadow"></div>
                  </div>
               </div>
               <div class="go__board">
                  <div class="go__board__top__side">
                     <div class="go__board__top__side__shadow"></div>
                     <div class="go__board__top__side__container">
                        <div class="go__board__stones__container">
                           <div class="go__board__stone go__board__stone--F6 go__board__stone--black go__board__stone--line--vertical--F go__board__stone--line--horizontal--6"></div>
                           <div class="go__board__stone go__board__stone--F6 go__board__stone--shadow go__board__stone--line--vertical--F go__board__stone--line--horizontal--6"></div>
                           <div class="go__board__stone go__board__stone--F5 go__board__stone--white go__board__stone--line--vertical--F go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--F5 go__board__stone--shadow go__board__stone--line--vertical--F go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--E5 go__board__stone--black go__board__stone--line--vertical--E go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--E5 go__board__stone--shadow go__board__stone--line--vertical--E go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--E6 go__board__stone--white go__board__stone--line--vertical--E go__board__stone--line--horizontal--6"></div>
                           <div class="go__board__stone go__board__stone--E6 go__board__stone--shadow go__board__stone--line--vertical--E go__board__stone--line--horizontal--6"></div>
                           <div class="go__board__stone go__board__stone--E4 go__board__stone--black go__board__stone--line--vertical--E go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--E4 go__board__stone--shadow go__board__stone--line--vertical--E go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--E7 go__board__stone--white go__board__stone--line--vertical--E go__board__stone--line--horizontal--7"></div>
                           <div class="go__board__stone go__board__stone--E7 go__board__stone--shadow go__board__stone--line--vertical--E go__board__stone--line--horizontal--7"></div>
                           <div class="go__board__stone go__board__stone--G5 go__board__stone--black go__board__stone--line--vertical--G go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--G5 go__board__stone--shadow go__board__stone--line--vertical--G go__board__stone--line--horizontal--5"></div>
                           <div class="go__board__stone go__board__stone--F4 go__board__stone--white go__board__stone--line--vertical--F go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--F4 go__board__stone--shadow go__board__stone--line--vertical--F go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--F3 go__board__stone--black go__board__stone--line--vertical--F go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--F3 go__board__stone--shadow go__board__stone--line--vertical--F go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--G4 go__board__stone--white go__board__stone--line--vertical--G go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--G4 go__board__stone--shadow go__board__stone--line--vertical--G go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--H4 go__board__stone--black go__board__stone--line--vertical--H go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--H4 go__board__stone--shadow go__board__stone--line--vertical--H go__board__stone--line--horizontal--4"></div>
                           <div class="go__board__stone go__board__stone--G3 go__board__stone--white go__board__stone--line--vertical--G go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--G3 go__board__stone--shadow go__board__stone--line--vertical--G go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--G2 go__board__stone--black go__board__stone--line--vertical--G go__board__stone--line--horizontal--2"></div>
                           <div class="go__board__stone go__board__stone--G2 go__board__stone--shadow go__board__stone--line--vertical--G go__board__stone--line--horizontal--2"></div>
                           <div class="go__board__stone go__board__stone--H3 go__board__stone--white go__board__stone--line--vertical--H go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--H3 go__board__stone--shadow go__board__stone--line--vertical--H go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--J3 go__board__stone--black go__board__stone--line--vertical--J go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--J3 go__board__stone--shadow go__board__stone--line--vertical--J go__board__stone--line--horizontal--3"></div>
                           <div class="go__board__stone go__board__stone--H2 go__board__stone--white go__board__stone--line--vertical--H go__board__stone--line--horizontal--2"></div>
                           <div class="go__board__stone go__board__stone--H2 go__board__stone--shadow go__board__stone--line--vertical--H go__board__stone--line--horizontal--2"></div>
                           <div class="go__board__stone go__board__stone--H1 go__board__stone--black go__board__stone--line--vertical--H go__board__stone--line--horizontal--1"></div>
                           <div class="go__board__stone go__board__stone--H1 go__board__stone--shadow go__board__stone--line--vertical--H go__board__stone--line--horizontal--1"></div>
                           <div class="go__board__stone go__board__stone--J2 go__board__stone--white go__board__stone--line--vertical--J go__board__stone--line--horizontal--2"></div>
                           <div class="go__board__stone go__board__stone--J2 go__board__stone--shadow go__board__stone--line--vertical--J go__board__stone--line--horizontal--2"></div>
                           <input type="checkbox" id="go__board__stone__J1__input">
                           <label class="go__board__stone go__board__stone__J1__container go__board__stone--line--vertical--J go__board__stone--line--horizontal--1" for="go__board__stone__J1__input">
                              <div class="go__board__stone go__board__stone--J1 go__board__stone--input--adjusted go__board__stone--black"></div>
                           </label>
                           <div class="go__board__stone go__board__stone--J1 go__board__stone--shadow go__board__stone--line--vertical--J go__board__stone--line--horizontal--1"></div>
                        </div>
                        <div class="go__board__star__points">
                           <div class="go__board__star__point" id="go__board__star__point--top--left"></div>
                           <div class="go__board__star__point" id="go__board__star__point--top--right"></div>
                           <div class="go__board__star__point" id="go__board__star__point--center"></div>
                           <div class="go__board__star__point" id="go__board__star__point--bottom--left"></div>
                           <div class="go__board__star__point" id="go__board__star__point--bottom--right"></div>
                        </div>
                        <div class="go__board__lines">
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--A"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--B"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--C"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--D"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--E"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--F"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--G"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--H"></div>
                           <div class="go__board__line go__board__line--vertical" id="go__board__line--vertical--J"></div>
                        </div>
                        <div class="go__board__lines go__board__lines--horizontal">
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--9"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--8"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--7"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--6"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--5"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--4"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--3"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--2"></div>
                           <div class="go__board__line go__board__line--horizontal" id="go__board__line--horizontal--1"></div>
                        </div>
                     </div>
                  </div>
                  <div class="go__board__front__side"></div>
               </div>
               <div class="go__board__bowl__area go__board__bowl__area--black">
                  <div class="go__board__bowl__container">
                     <div class="go__board__bowl">
                        <div class="go__board__bowl__wood__pattern__container go__board__bowl--wood--align--top">
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--1"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--2"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--3"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--4"></div>
                           <div class="go__board__bowl__wood__pattern__1" id="go__board__bowl__wood__pattern__1--line--5"></div>
                        </div>
                        <div class="go__board__bowl__lid__area go__board__bowl__lid__area--align--top">
                           <div class="go__board__bowl__inner__space">
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner_space__level--1">
                                 <div class="go__board__stones__container">
                                    <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--1"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner__space__level--2">
                                 <div class="go__board__stones__container">
                                    <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--2"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__inner__space__level go__board__bowl__inner__space__level--3">
                                 <div class="go__board__stones__container">
                                    <div class="go__board__bowl__inner__space__shadow__level go__board__bowl__inner__space__shadow__level--3"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--F3" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--H1" id="go__board__stone--bowl--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--J3" id="go__board__stone--bowl--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--H4" id="go__board__stone--bowl--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--G5" id="go__board__stone--bowl--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted" id="go__board__stone--bowl--inner--space--pos--7"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--G2" id="go__board__stone--bowl--inner--space--pos--8"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--E4" id="go__board__stone--bowl--inner--space--pos--9"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--J1" id="go__board__stone--bowl--inner--space--pos--10"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--E5" id="go__board__stone--bowl--inner--space--pos--11"></div>
                                    <div class="go__board__stone go__board__stone--black go__board__stone--bowl--inner--space--adjusted go__board__stone--bowl--picking go__board__stone--F6" id="go__board__stone--bowl--inner--space--pos--12"></div>
                                 </div>
                              </div>
                           </div>
                           <div class="go__board__bowl__lid">
                              <div class="go__board__bowl__lid__side go__board__bowl__lid__side--top">
                                 <div class="go__board___bowl__wood__pattern__container">
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--1"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--2"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--3"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--4"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--5"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--6"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--7"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--8"></div>
                                    <div class="go__board__bowl__wood__pattern__2 go__board__bowl__wood__pattern__2--variation" id="go__board__bowl__wood__pattern__2--line--9"></div>
                                 </div>
                              </div>
                              <div class="go__board__bowl__lid__side go__board__bowl__lid__side--inner--space">
                                 <div class="go__board__bowl__wood__pattern__container go__board__bowl__wood__pattern__container--align--separately">
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--1"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--2"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--3"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--4"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--5"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--6"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--7"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--8"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--9"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--10"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--11"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--12"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--13"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--14"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--15"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--16"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--17"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--18"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--19"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--20"></div>
                                    <div class="go__board__bowl__wood__pattern__3" id="go__board__bowl__wood__pattern__3--line--21"></div>
                                 </div>
                                 <div class="go__board__bowl__lid__side__inner__space__shadow"></div>
                                 <div class="go__board__bowl__lid__side__inner__space__border"></div>
                                 <div class="go__board__stones__container go__board__stones__container--bowl--lid--inner--space--adjusted">
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--1"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--2"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--3"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--4"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--5"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--6"></div>
                                    <div class="go__board__stone go__board__stone--white go__board__stone--bowl--lid--inner--space--adjusted" id="go__board__stone--lid--inner--space--pos--7"></div>
                                 </div>
                              </div>
                           </div>
                        </div>
                     </div>
                     <div class="go__board__bowl__lid__area go__board__bowl__lid__area--shadow"></div>
                  </div>
               </div>
            </div>
         </div>
         <div class="tatami__mat__piece tatami__mat__piece--column--2--row--3 tatami__mat__piece--reverse--mat"></div>
         <div class="tatami__mat__piece tatami__mat__piece--column--3"></div>
      </div>
   </div>
</body>
!

CSS 

              
                :root {
   --color-go-board-outer-shadow: rgba(26, 27, 1, 0.9);
   --color-background-top-right: #cde2eb;
   --color-background-bottom-left: #8a97a0;
   --go-board-light-direction: -150deg;
   --go-board-outer-shadow-x: -15px;
   --go-board-outer-shadow-y: 10px;
   --go-board-outer-shadow-blur: 15px;
   --go-board-outer-shadow-spread: 5px;
   --go-board-outer-shadow: var(--go-board-outer-shadow-x) var(--go-board-outer-shadow-y) var(--go-board-outer-shadow-blur) var(--go-board-outer-shadow-spread) var(--color-go-board-outer-shadow);
}

*, *::before, *::after {
   box-sizing: border-box;
}

html {
   width: 100vw;
   height: 100svh;
}

body {
   height: 100%;
   width: 100%;
   margin: 0 0;
   display: flex;
   justify-content: center;
   align-items: center;
   position: relative;
}

input {
   appearance: none;
   display: block;
   margin: 0 0;
   padding: 0 0;
   display: none;
}

.floor {
   width: 100%;
   height: 100%;
   display: flex;
   justify-content: center;
   align-items: center;
   z-index: 0;
}

.floor__shadow {
   width: 100%;
   height: 100%;
   position: absolute;
   z-index: 0;
   background: linear-gradient(var(--go-board-light-direction), transparent 20%, rgba(0, 0, 0, 0.4) 80%);
}

.tatami__mat {
   width: 100%;
   height: 100%;
   position: absolute;
   z-index: 0;
   display: grid;
   grid-template-columns: 1fr 2fr 1fr;
   grid-template-rows: 1fr 2.5fr 1fr;
}

.tatami__mat__piece {
   --color-tatami-mat-edge: #2e3d1f;
   --color-tatami-mat-edge--divider: #191e14;
   --color-reseda-green-1: #788e69;
   --color-reseda-green-2: #596b44;
   --color-pakistan-green: #284116;
   --color-ecru: #d1b88c;
   --color-drab-dark-brown: #534619;
   --color-smoky-black: rgba(31, 21, 3, 0.9);
   --tatami-mat-divider-size: 2px;
   --tatami-mat-edge-size: 15px;
   --tatami-mar-edge-blur: 2px; /*to fix*/
   --tatami-mat-direction-pattern-1: 90deg;
   --tatami-mat-direction-pattern-2: 0deg;
   --vertical-rod-width: calc(25% / 3); 
   --back-vertical-rod-width: calc(25% / 3); 
   --horizontal-rod-width: calc(50% / 4);
   --blend-size: 1px;
   --blend-factor: 2.5;
   --beige-rod-blend-factor: 1.5;
   --shadow-blend-factor: 3;

   background:
      /*front vertical*/
      linear-gradient(90deg,
         transparent calc(var(--vertical-rod-width) * 3),
         var(--color-reseda-green-1) calc(var(--vertical-rod-width) * 3),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 4 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--back-vertical-rod-width) * 4),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 4),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 5 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--back-vertical-rod-width) * 5),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 5),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 6 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--back-vertical-rod-width) * 6),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 6),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 7 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--back-vertical-rod-width) * 7),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 7),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 8 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--back-vertical-rod-width) * 8),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 8),
         var(--color-reseda-green-1) calc(var(--back-vertical-rod-width) * 9),
         transparent calc(var(--back-vertical-rod-width) * 9)),
      /*shadow*/
      linear-gradient(90deg,
         transparent calc(var(--vertical-rod-width) * 3 - var(--blend-size) * var(--shadow-blend-factor)),
         var(--color-smoky-black) calc(var(--vertical-rod-width) * 3),
         var(--color-smoky-black) calc(var(--vertical-rod-width) * 9),
         transparent calc(var(--vertical-rod-width) * 9 + var(--blend-size) * var(--shadow-blend-factor))),
      /*horizontal*/
      linear-gradient(0deg,
         var(--color-pakistan-green),
         var(--color-reseda-green-2) var(--blend-size),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) var(--horizontal-rod-width),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) + var(--blend-size)),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) * 2 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--horizontal-rod-width) * 2),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) * 2 + var(--blend-size)),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) * 3 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--horizontal-rod-width) * 3),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) * 3 + var(--blend-size)),
         var(--color-reseda-green-2) calc(var(--horizontal-rod-width) * 4 - var(--blend-size) * var(--blend-factor)),
         var(--color-pakistan-green) calc(var(--horizontal-rod-width) * 4),
         transparent calc(var(--horizontal-rod-width) * 4 + var(--blend-size))),
      /*back vertical*/
      linear-gradient(90deg,
         var(--color-drab-dark-brown),
         var(--color-ecru) calc(var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-ecru) calc(var(--back-vertical-rod-width) - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width)),
         var(--color-ecru) calc(var(--back-vertical-rod-width)),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 2 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 2),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 2),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 3 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 3),
         transparent calc(var(--back-vertical-rod-width) * 3),
         transparent calc(var(--back-vertical-rod-width) * 9 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 9),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 9),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 10 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 10),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 10),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 11 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 11),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 11),
         var(--color-ecru) calc(var(--back-vertical-rod-width) * 12 - var(--blend-size) * var(--beige-rod-blend-factor)),
         var(--color-drab-dark-brown) calc(var(--back-vertical-rod-width) * 12));

   background-size: 1.5rem 1.5rem;
   box-shadow: 0px 0px var(--tatami-mar-edge-blur) var(--tatami-mat-edge-size) var(--color-tatami-mat-edge) inset;
}

.tatami__mat__piece--column--1 {
   grid-column: 1 / 1;
   grid-row: 1 / 4;
   border-right: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
}

.tatami__mat__piece--column--2--row--1 {
   grid-column: 2 / 2;
   grid-row: 1 / 1;
   border: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   border-top: none;
}

.tatami__mat__piece--reverse--mat {
   --tatami-mat-direction-pattern-1: 0deg;
   --tatami-mat-direction-pattern-2: 90deg;
}

.tatami__mat__piece--column--2--row--2 {
   grid-column: 2 / 2;
   grid-row: 2 / 2;
   border: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   padding: 3rem;
   display: flex;
   justify-content: center;
   align-items: center;
}

.tatami__mat__piece__container {
   --go-board-line-animation-duration: 0.35s;
   --go-board-line-horizontal-9-delay: 50ms;
   --go-board-line-vertical-J-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-9-delay));
   --go-board-line-horizontal-1-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-J-delay));
   --go-board-line-vertical-A-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-1-delay));
   --go-board-line-vertical-B-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-A-delay));;
   --go-board-line-vertical-C-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-B-delay));;
   --go-board-line-vertical-D-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-C-delay));;
   --go-board-line-vertical-E-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-D-delay));;
   --go-board-line-vertical-F-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-E-delay));;
   --go-board-line-vertical-G-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-F-delay));;
   --go-board-line-vertical-H-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-G-delay));;
   --go-board-line-horizontal-2-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-vertical-H-delay));;
   --go-board-line-horizontal-3-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-2-delay));;
   --go-board-line-horizontal-4-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-3-delay));;
   --go-board-line-horizontal-5-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-4-delay));;
   --go-board-line-horizontal-6-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-5-delay));;
   --go-board-line-horizontal-7-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-6-delay));;
   --go-board-line-horizontal-8-delay: calc(var(--go-board-line-animation-duration) + var(--go-board-line-horizontal-7-delay));;
   --go-board-stone-delay: 1s;
   --go-board-stone-F6-delay: calc(var(--go-board-line-horizontal-8-delay) + var(--go-board-stone-delay));
   --go-board-stone-F5-delay: calc(var(--go-board-stone-F6-delay) + var(--go-board-stone-delay));
   --go-board-stone-E5-delay: calc(var(--go-board-stone-F5-delay) + var(--go-board-stone-delay));
   --go-board-stone-E6-delay: calc(var(--go-board-stone-E5-delay) + var(--go-board-stone-delay));
   --go-board-stone-E4-delay: calc(var(--go-board-stone-E6-delay) + var(--go-board-stone-delay));
   --go-board-stone-E7-delay: calc(var(--go-board-stone-E4-delay) + var(--go-board-stone-delay));
   --go-board-stone-G5-delay: calc(var(--go-board-stone-E7-delay) + var(--go-board-stone-delay));
   --go-board-stone-F4-delay: calc(var(--go-board-stone-G5-delay) + var(--go-board-stone-delay));
   --go-board-stone-F3-delay: calc(var(--go-board-stone-F4-delay) + var(--go-board-stone-delay));
   --go-board-stone-G4-delay: calc(var(--go-board-stone-F3-delay) + var(--go-board-stone-delay));
   --go-board-stone-H4-delay: calc(var(--go-board-stone-G4-delay) + var(--go-board-stone-delay));
   --go-board-stone-G3-delay: calc(var(--go-board-stone-H4-delay) + var(--go-board-stone-delay));
   --go-board-stone-G2-delay: calc(var(--go-board-stone-G3-delay) + var(--go-board-stone-delay));
   --go-board-stone-H3-delay: calc(var(--go-board-stone-G2-delay) + var(--go-board-stone-delay));
   --go-board-stone-J3-delay: calc(var(--go-board-stone-H3-delay) + var(--go-board-stone-delay));
   --go-board-stone-H2-delay: calc(var(--go-board-stone-J3-delay) + var(--go-board-stone-delay));
   --go-board-stone-H1-delay: calc(var(--go-board-stone-H2-delay) + var(--go-board-stone-delay));
   --go-board-stone-J2-delay: calc(var(--go-board-stone-H1-delay) + var(--go-board-stone-delay));
   --go-board-stone-J1-delay: calc(var(--go-board-stone-J2-delay) + var(--go-board-stone-delay));


   width: 100%;
   display: flex;
   justify-content: center;
   align-items: center;
   /*position: relative; */ /*if turned on the shadow will only work for a portion of the middle mat, so it would need to be placed under the floor*/
}

.tatami__mat__piece--column--2--row--3 {
   grid-column: 2 / 2;
   grid-row: 3 / 3;
   border: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   border-bottom: none;
}

.tatami__mat__piece--column--3 {
   grid-column: 3 / 3;
   grid-row: 1 / 4;
   border-left: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
}

@media (width < 1100px) {
   .tatami__mat {
      grid-template-columns: 1fr;
      grid-template-rows: 0.8fr 2.5fr 0.8fr;
   }

   .tatami__mat__piece--column--1, .tatami__mat__piece--column--3 {
      display: none;
   }

   .tatami__mat__piece--column--2--row--1 {
      grid-column: 1 / 1;
      grid-row: 1 / 1;
      border-bottom: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   }

   .tatami__mat__piece--column--2--row--2 {
      grid-column: 1 / 1;
      grid-row: 2 / 2;
      border-top: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
      border-bottom: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   }

   .tatami__mat__piece--column--2--row--3 {
      grid-column: 1 / 1;
      grid-row: 3 / 3;
      border-top: var(--tatami-mat-divider-size) solid var(--color-tatami-mat-edge--divider);
   }
}

.go__board__stones__container {
   width: 100%;
   height: 100%;
   position: absolute;
   border-radius: inherit;
}

@keyframes place-stone {
   0% { visibility: hidden; }
   100% { visibility: visible; }
}

.go__board__stone {
   --go-board-stone-width: var(--go-board-line-distance);

   width: var(--go-board-stone-width);
   aspect-ratio: 1;
   border-radius: 50%;
   position: absolute;
   background: radial-gradient(circle at 90% 10%, var(--color-go-board-stone-light) 30%, var(--color-go-board-stone-dark) 80%);
   z-index: 2;
   visibility: hidden;
   animation-name: place-stone;
   animation-duration: 0s;
   animation-fill-mode: forwards;
   animation-timing-function: linear;
}

.go__board__stone--shadow {
   --go-board-stone-outer-shadow: #72623f;

   width: var(--go-board-stone-width);
   aspect-ratio: 1;
   border-radius: 50%;
   position: absolute;
   box-shadow: -2px 2px 5px 0px var(--go-board-stone-outer-shadow);
   z-index: 0;
}

.go__board__stone--white {
   --color-go-board-stone-light: #d1d1d1;
   --color-go-board-stone-dark: #b0b0b3;
}

.go__board__stone--black {
   --color-go-board-stone-light: #34302f;
   --color-go-board-stone-dark: #201d1c;
}

.go__board__stone--line--vertical--E {
   left: calc(var(--go-board-line-distance) * 4 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--vertical--F {
   left: calc(var(--go-board-line-distance) * 5 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--vertical--G {
   left: calc(var(--go-board-line-distance) * 6 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--vertical--H {
   left: calc(var(--go-board-line-distance) * 7 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--vertical--J {
   left: calc(var(--go-board-line-distance) * 8 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--1 {
   bottom: calc(-1 * var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--2 {
   bottom: calc(var(--go-board-line-distance) - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--3 {
   bottom: calc(var(--go-board-line-distance) * 2 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--4 {
   bottom: calc(var(--go-board-line-distance) * 3 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--5 {
   bottom: calc(var(--go-board-line-distance) * 4 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--6 {
   bottom: calc(var(--go-board-line-distance) * 5 - var(--go-board-stone-width) / 2);
}

.go__board__stone--line--horizontal--7 {
   bottom: calc(var(--go-board-line-distance) * 6 - var(--go-board-stone-width) / 2);
}

.go__board__stone--F6 {
   animation-delay: var(--go-board-stone-F6-delay);
}

.go__board__stone--F5 {
   animation-delay: var(--go-board-stone-F5-delay);
}

.go__board__stone--E5 {
   animation-delay: var(--go-board-stone-E5-delay);
}

.go__board__stone--E6 {
   animation-delay: var(--go-board-stone-E6-delay);
}

.go__board__stone--E4 {
   animation-delay: var(--go-board-stone-E4-delay);
}

.go__board__stone--E7 {
   animation-delay: var(--go-board-stone-E7-delay);
}

.go__board__stone--G5 {
   animation-delay: var(--go-board-stone-G5-delay);
}

.go__board__stone--F4 {
   animation-delay: var(--go-board-stone-F4-delay);
}

.go__board__stone--F3 {
   animation-delay: var(--go-board-stone-F3-delay);
}

.go__board__stone--G4 {
   animation-delay: var(--go-board-stone-G4-delay);
}

.go__board__stone--H4 {
   animation-delay: var(--go-board-stone-H4-delay);
}

.go__board__stone--G3 {
   animation-delay: var(--go-board-stone-G3-delay);
}

.go__board__stone--G2 {
   animation-delay: var(--go-board-stone-G2-delay);
}

.go__board__stone--H3 {
   animation-delay: var(--go-board-stone-H3-delay);
}

.go__board__stone--J3 {
   animation-delay: var(--go-board-stone-J3-delay);
}

.go__board__stone--H2 {
   animation-delay: var(--go-board-stone-H2-delay);
}

.go__board__stone--H1 {
   animation-delay: var(--go-board-stone-H1-delay);
}

.go__board__stone--J2 {
   animation-delay: var(--go-board-stone-J2-delay);
}

.go__board__stone__J1__container {
   animation-delay: var(--go-board-stone-J1-delay);
}

#go__board__stone__J1__input {
   pointer-events: auto;
}

.go__board__stone--input--adjusted {
   width: 100%;
   aspect-ratio: 1;
}

.go__board__stone--J1 {
   animation: none;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--F5 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--F4 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--G4 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--G3 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--H3 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--H2 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--J2 {
   animation-iteration-count: 1;
   animation-direction: reverse;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone__J1__container {
   pointer-events: none;
}

.go__board__stones__container:has(#go__board__stone__J1__input:checked) .go__board__stone--J1 {
   visibility: visible;
}

.go__board {
   --color-go-board-light: rgba(238, 197, 96, 0.55);
   --color-go-board-dark: #c49c2d;
   --go-board-border-radius: 5px;
   --go-board-border-radius-bottom: 7px; /* 7px for additional curve to give a better illusion*/
   --go-board-front-side-height: 0.05;

   width: 50%;
   aspect-ratio: 1 / calc(1 + var(--go-board-front-side-height));
   box-shadow: var(--go-board-outer-shadow),
               2px -2px var(--go-board-outer-shadow-blur) 0px var(--color-go-board-outer-shadow);
   position: relative;
   z-index: 0;
   border-radius: var(--go-board-border-radius-bottom);
}

.go__board__top__side {
   --color-go-board-inner-shadow-light: rgba(243, 217, 185, 0.5);
   --color-go-board-inner-shadow-dark: #a07d18;

   width: 100%;
   aspect-ratio: 1;
   padding: min(5%, 2rem);
   border-radius: var(--go-board-border-radius) var(--go-board-border-radius) var(--go-board-border-radius-bottom) var(--go-board-border-radius-bottom); 
   background: var(--color-go-board-dark);
   box-shadow: -5px 10px 10px 5px var(--color-go-board-inner-shadow-light) inset,
               5px -5px 15px 2px var(--color-go-board-inner-shadow-dark) inset;
   z-index: 1;
   position: relative;
}

.go__board__top__side__shadow {
   width: 100%;
   aspect-ratio: 1;
   position: absolute;
   background: linear-gradient(var(--go-board-light-direction), var(--color-go-board-light) 20%, transparent 60%);
   z-index: 1;
   top: 0;
   left: 0;
}

.go__board__top__side__container {
   --go-board-line-size: 2px;
   --go-board-num-of-lines: 8;
   --go-board-line-distance: calc(100% / var(--go-board-num-of-lines));

   width: 100%;
   height: 100%;
   position: relative;
}

.go__board__front__side {
   --color-go-board-side: #946200;
   --color-go-board-side-edge: #ac7f25;
   --color-wood-line: #814100;

   width: 100%;
   height: calc(var(--go-board-front-side-height) * 100% + var(--go-board-border-radius));
   background: linear-gradient(-90deg, var(--color-go-board-side-edge) 1%, var(--color-go-board-side) 10%);
   border-radius: 0 0 var(--go-board-border-radius-bottom) var(--go-board-border-radius-bottom);
   z-index: -1;
   position: absolute;
   bottom: 0;
}

.go__board__lines {
   width: 100%;
   height: 100%;
   display: flex;
   justify-content: space-between;
   position: absolute;
}

@keyframes draw-vertical-line {
   from { height: 0; }
   to { height: 100%; }
}

.go__board__line {
   background-color: black;
   animation-duration: var(--go-board-line-animation-duration);
   animation-iteration-count: 1;
   animation-fill-mode: forwards;
   animation-timing-function: cubic-bezier(0.785, 0.135, 0.150, 0.860); /* easeInOutCirc */;
}

.go__board__line--vertical {
   width: var(--go-board-line-size);
   height: 0;
   animation-name: draw-vertical-line;
}

#go__board__line--vertical--A {
   animation-delay: var(--go-board-line-vertical-A-delay);
   margin-top: auto;
}

#go__board__line--vertical--B {
   animation-delay: var(--go-board-line-vertical-B-delay);
}

#go__board__line--vertical--C {
   animation-delay: var(--go-board-line-vertical-C-delay);
   margin-top: auto;
}

#go__board__line--vertical--D {
   animation-delay: var(--go-board-line-vertical-D-delay);
}

#go__board__line--vertical--E {
   animation-delay: var(--go-board-line-vertical-E-delay);
   margin-top: auto;
}

#go__board__line--vertical--F {
   animation-delay: var(--go-board-line-vertical-F-delay);
}

#go__board__line--vertical--G {
   animation-delay: var(--go-board-line-vertical-G-delay);
   margin-top: auto;
}

#go__board__line--vertical--H {
   animation-delay: var(--go-board-line-vertical-H-delay);
}

#go__board__line--vertical--J {
   animation-delay: var(--go-board-line-vertical-J-delay);
}

.go__board__lines--horizontal {
   flex-direction: column;
}

@keyframes draw-horizontal-line {
   from { width: 0; }
   to { width: 100%; }
}

.go__board__line--horizontal {
   width: 0;
   height: var(--go-board-line-size);
   animation-name: draw-horizontal-line;
}

#go__board__line--horizontal--9 {
   animation-delay: var(--go-board-line-horizontal-9-delay);
}

#go__board__line--horizontal--8 {
   animation-delay: var(--go-board-line-horizontal-8-delay);
   margin-left: auto;
}

#go__board__line--horizontal--7 {
   animation-delay: var(--go-board-line-horizontal-7-delay);
}

#go__board__line--horizontal--6 {
   animation-delay: var(--go-board-line-horizontal-6-delay);
   margin-left: auto;
}

#go__board__line--horizontal--5 {
   animation-delay: var(--go-board-line-horizontal-5-delay);
}

#go__board__line--horizontal--4 {
   animation-delay: var(--go-board-line-horizontal-4-delay);
   margin-left: auto;
}

#go__board__line--horizontal--3 {
   animation-delay: var(--go-board-line-horizontal-3-delay);
}

#go__board__line--horizontal--2 {
   animation-delay: var(--go-board-line-horizontal-2-delay);
   margin-left: auto;
}

#go__board__line--horizontal--1 {
   margin-left: auto;
   animation-delay: var(--go-board-line-horizontal-1-delay);
}

@keyframes draw-star-points {
   from { opacity: 0; } 
   to { opacity: 1; } 
}

.go__board__star__points {
   --go-board-star-point-size: min(10%, 10px);
   --go-board-star-points-margin: 2;

   width: calc(var(--go-board-line-distance) * (var(--go-board-num-of-lines) - var(--go-board-star-points-margin) * 2));
   height: calc(var(--go-board-line-distance) * (var(--go-board-num-of-lines) - var(--go-board-star-points-margin) * 2));
   position: absolute;
   top: calc(var(--go-board-line-distance) * var(--go-board-star-points-margin));
   left: calc(var(--go-board-line-distance) * var(--go-board-star-points-margin));
   opacity: 0;
   animation-name: draw-star-points;
   animation-duration: var(--go-board-line-animation-duration);
   animation-timing-function: ease-in-out;
   animation-iteration-count: 1;
   animation-fill-mode: forwards;
   animation-delay: var(--go-board-line-horizontal-8-delay);
}

.go__board__star__point {
   width: var(--go-board-star-point-size);
   aspect-ratio: 1;
   background-color: black;
   border-radius: 50%;
   position: absolute;
}

#go__board__star__point--top--left {
   top: calc(-1 * var(--go-board-star-point-size) / 2);
   left: calc(-1 * var(--go-board-star-point-size) / 2);
}

#go__board__star__point--top--right {
   top: calc(-1 * var(--go-board-star-point-size) / 2);
   right: calc(-1 * var(--go-board-star-point-size) / 2);
}

#go__board__star__point--center {
   top: calc(100% / 4 * 2 - var(--go-board-star-point-size) / 2);
   left: calc(100% / 4 * 2 - var(--go-board-star-point-size) / 2);
}

#go__board__star__point--bottom--left {
   bottom: calc(-1 * var(--go-board-star-point-size) / 2);
   left: calc(-1 * var(--go-board-star-point-size) / 2);
}

#go__board__star__point--bottom--right {
   bottom: calc(-1 * var(--go-board-star-point-size) / 2);
   right: calc(-1 * var(--go-board-star-point-size) / 2);
}

@media (width < 500px) {
   .go__board {
      width: 60%;
   }
}

.go__board__bowl__area {
   container-type: inline-size;
   width: 20%;
   display: flex;
}

.go__board__bowl__area--white {
   align-self: flex-start;
}

.go__board__bowl__container {
   --go-board-bowl-lid-width: 0.8;
   --go-board-bowl-animation-duration: 1.5s;
   --go-board-bowl-animation-delay: 2200ms;
   --go-board-bowl-lid-distance-y: 150%;

   width: 75%;
   aspect-ratio: 1;
   position: relative;
   z-index: 0;
}

.go__board__bowl {
   --color-go-board-bowl-dark: #441712;
   --color-go-board-bowl-medium: #83401e;
   --color-go-board-bowl-light: #c66f3a;
   --color-go-board-bowl-gradient: var(--color-go-board-bowl-light) 20%, var(--color-go-board-bowl-medium) 40%, var(--color-go-board-bowl-dark) 70%;
   --color-go-board-bowl-lid-border: #ad4d20;
   --color-go-board-bowl-inner-dark: #210c11;
   --color-go-board-bowl-inner-light: #7d2a11;
   --color-go-board-bowl-wood-line: #2e0e12;
   --color-go-board-bowl-wood-line-variant-1: #d09b6b;
   --color-go-board-bowl-wood-line-variant-2: #1c0b13;
   --go-board-bowl-lid-border-size: 3px;

   width: 100%;
   height: 100%;
   border-radius: 50%;
   position: relative;
   background: linear-gradient(var(--go-board-light-direction), var(--color-go-board-bowl-gradient));
   box-shadow: var(--go-board-outer-shadow);
   perspective: 1000px;
   transform-style: preserve-3d;
   z-index: 0;
}

.go__board__bowl__wood__pattern__container {
   width: 100%;
   height: 100%;
   position: relative;
   display: flex;
   align-items: center;
   justify-content: center;
   border-radius: inherit;
   z-index: 0;
}

.go__board__bowl--wood--align--bottom {
   align-items: flex-end;
}

.go__board__bowl__wood__pattern__1 {
   --go-board-bowl-wood-line-opacity: 0.1;

   width: calc(var(--go-board-bowl-wood-line-width) * 100%);
   aspect-ratio: 1;
   border: 1px solid var(--color-go-board-bowl-wood-line);
   border-radius: 50%;
   position: absolute;
   opacity: 0.3;
}

.go__board__bowl__wood__pattern__container > .go__board__bowl__wood__pattern__1:nth-of-type(2n) {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
   --go-board-bowl-wood-line-opacity: 0.25;
}

#go__board__bowl__wood__pattern__1--line--1 {
   --go-board-bowl-wood-line-width: 0.87;
}

#go__board__bowl__wood__pattern__1--line--2 {
   --go-board-bowl-wood-line-width: 0.9;
}

#go__board__bowl__wood__pattern__1--line--3 {
   --go-board-bowl-wood-line-width: 0.93;
}

#go__board__bowl__wood__pattern__1--line--4 {
   --go-board-bowl-wood-line-width: 0.96;
}

#go__board__bowl__wood__pattern__1--line--5 {
   --go-board-bowl-wood-line-width: 0.99;
}

.go__board__bowl__lid__area {
   width: calc(var(--go-board-bowl-lid-width) * 100%);
   height: calc(var(--go-board-bowl-lid-width) * 100%);
   border-radius: 50%;
   position: absolute;
   bottom: 5%;
   left: calc((100% - var(--go-board-bowl-lid-width) * 100%) / 2);
}

.go__board__bowl__inner__space {
   width: 100%;
   height: 100%;
   border-radius: inherit;
   background: radial-gradient(circle at 20% 90%, var(--color-go-board-bowl-inner-light) 5%, var(--color-go-board-bowl-inner-dark) 80%);
   border: var(--go-board-bowl-lid-border-size) solid var(--color-go-board-bowl-lid-border);
   position: absolute;
   overflow: hidden;
   z-index: 0;
}

@keyframes flip-lid {
   0% {
      transform: translateZ(0) translateY(0) rotateX(0);
      animation-timing-function: linear;
      box-shadow: 0px 0px 5px 2px var(--go-board-bowl-lid-shadow);
   }

   20% {
      transform: translateZ(40px) translateY(calc(var(--go-board-bowl-lid-distance-y) / 5)) rotateX(36deg);
      animation-timing-function: linear;
      box-shadow: 0px 0px 5px 1px var(--go-board-bowl-lid-shadow);
   }

   40% {
      transform: translateZ(60px) translateY(calc(var(--go-board-bowl-lid-distance-y) / 5 * 2)) rotateX(72deg);
      animation-timing-function: linear;
      box-shadow: 0px 0px 5px 0px var(--go-board-bowl-lid-shadow);
   }

   60% {
      transform: translateZ(30px) translateY(calc(var(--go-board-bowl-lid-distance-y) / 5 * 3)) rotateX(108deg);
      animation-timing-function: linear;
      box-shadow: 0px 0px 0px 0px var(--go-board-bowl-lid-shadow);
   }

   80% {
      transform: translateZ(15px) translateY(calc(var(--go-board-bowl-lid-distance-y) / 5 * 4)) rotateX(144deg);
      animation-timing-function: linear;
      box-shadow: 0px 0px 0px 0px var(--go-board-bowl-lid-shadow);
   }

   100% {
      transform: translateZ(0) translateY(var(--go-board-bowl-lid-distance-y)) rotateX(180deg);
      animation-timing-function: ease-out;
      box-shadow: 0px 0px 0px 0px var(--go-board-bowl-lid-shadow);
   }
}
.go__board__bowl__lid {
   --go-board-bowl-lid-shadow: #240e13;

   width: 100%;
   height: 100%;
   border-radius: inherit;
   animation-name: flip-lid;
   animation-duration: var(--go-board-bowl-animation-duration);
   animation-delay: var(--go-board-bowl-animation-delay);
   animation-fill-mode: forwards;
   transform-style: preserve-3d;
   z-index: 1;
   box-shadow: 0px 0px 5px 2px var(--go-board-bowl-lid-shadow);
}

.go__board__bowl__lid__side {
   width: 100%;
   height: 100%;
   border-radius: 50%;
   position: absolute;
}

.go__board__bowl__lid__side--top {
   background: radial-gradient(circle at 90% 20%, var(--color-go-board-bowl-gradient));
   transform: translateZ(2px);
   display: flex;
   justify-content: center;
   align-items: center;
   overflow: hidden;
}

.go__board__bowl__wood__pattern__2 {
   --go-board-bowl-wood-line-opacity: 0.35;

   width: calc(var(--go-board-bowl-wood-line-width) * 100%);
   aspect-ratio: 1 / 2;
   border: 1px solid var(--color-go-board-bowl-wood-line);
   border-radius: 50%;
   position: absolute;
   opacity: var(--go-board-bowl-wood-line-opacity);
   transform-origin: center;
   transform: rotateZ(-45deg);
   border-top: none;
   border-left: none;
   top: calc(25% - var(--go-board-bowl-prev-wood-line-width) * 100%);
   left: calc(25% - (var(--go-board-bowl-prev-wood-line-width) / 2) * 100%);
   filter: blur(0.2px);
}

.go__board__bowl__wood__pattern__2:nth-of-type(2n) {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

.go__board__bowl__wood__pattern__2:nth-of-type(2n + 1) {
   border-left: 1px solid var(--color-go-board-bowl-wood-line);
}

#go__board__bowl__wood__pattern__2--line--1 {
   --go-board-bowl-wood-line-width: 0.1;
   --go-board-bowl-prev-wood-line-width: 0;
}

#go__board__bowl__wood__pattern__2--line--2 {
   --go-board-bowl-wood-line-width: 0.2;
   --go-board-bowl-prev-wood-line-width: 0.1;
}

#go__board__bowl__wood__pattern__2--line--3 {
   --go-board-bowl-wood-line-width: 0.3;
   --go-board-bowl-prev-wood-line-width: 0.2;
}

#go__board__bowl__wood__pattern__2--line--4 {
   --go-board-bowl-wood-line-width: 0.4;
   --go-board-bowl-prev-wood-line-width: 0.3;
}

#go__board__bowl__wood__pattern__2--line--5 {
   --go-board-bowl-wood-line-width: 0.5;
   --go-board-bowl-prev-wood-line-width: 0.4;
}

#go__board__bowl__wood__pattern__2--line--6 {
   --go-board-bowl-wood-line-width: 0.6;
   --go-board-bowl-prev-wood-line-width: 0.5;
}

#go__board__bowl__wood__pattern__2--line--7 {
   --go-board-bowl-wood-line-width: 0.7;
   --go-board-bowl-prev-wood-line-width: 0.6;
}

#go__board__bowl__wood__pattern__2--line--8 {
   --go-board-bowl-wood-line-width: 0.8;
   --go-board-bowl-prev-wood-line-width: 0.7;
   border-right: none;
}

#go__board__bowl__wood__pattern__2--line--9 {
   --go-board-bowl-wood-line-width: 0.9;
   --go-board-bowl-prev-wood-line-width: 0.8;
}

.go__board__bowl__lid__side--inner--space {
   --go-board-bowl-lid-inner-space-border-max-reach: 70%;
   --go-board-bowl-lid-inner-space-border-size: calc(var(--go-board-bowl-lid-border-size) * 2);
   --go-board-bowl-lid-inner-space-border-start: calc(var(--go-board-bowl-lid-inner-space-border-max-reach) - var(--go-board-bowl-lid-inner-space-border-size));

   background-color: var(--color-go-board-bowl-inner-light);
   transform: translateZ(0);
   display: flex;
   justify-content: center;
   align-items: center;
   position: relative;
   overflow: hidden;
   z-index: 0;
}

.go__board__bowl__lid__side__inner__space__shadow {
   width: 100%;
   height: 100%;
   position: absolute;
   z-index: 1;
   background: 
      /*border shadow highlight*/
      radial-gradient(circle at center,
         transparent calc(var(--go-board-bowl-lid-inner-space-border-start) - 2px),
         var(--color-go-board-bowl-inner-dark) var(--go-board-bowl-lid-inner-space-border-start)),
      /*inner space coloring*/
      radial-gradient(circle at 20% 20%,
         transparent 45%,
         var(--color-go-board-bowl-inner-dark) 75%);
}

.go__board__bowl__lid__side__inner__space__border {
   --color-go-board-bowl-lid-border-dark: rgba(59, 13, 11, 0.75);
   width: 100%;
   height: 100%;
   border-radius: inherit;
   z-index: 2;
   background: 
      conic-gradient(from 190deg at 50% 50%, 
         transparent 0deg, 
         var(--color-go-board-bowl-lid-border-dark) 60deg,
         var(--color-go-board-bowl-lid-border-dark) 180deg,
         transparent 250deg),

      radial-gradient(circle at center, 
         transparent calc(var(--go-board-bowl-lid-inner-space-border-start) - 2px),
         var(--color-go-board-bowl-lid-border) var(--go-board-bowl-lid-inner-space-border-start),
         var(--color-go-board-bowl-lid-border) var(--go-board-bowl-lid-inner-space-border-max-reach));
   mask: 
      radial-gradient(circle at center, 
         transparent calc(var(--go-board-bowl-lid-inner-space-border-start) - 5px),
         black var(--go-board-bowl-lid-inner-space-border-start));
   position: absolute;
}

.go__board__stones__container--bowl--lid--inner--space--adjusted {
   width: 100%;
   height: 100%;
   border-radius: inherit;
   z-index: 0;
}

.go__board__stone--bowl--lid--inner--space--adjusted {
   animation: none;
   visibility: hidden;
   width: 40%;
   z-index: 0;
   box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.6);
}

#go__board__stone--lid--inner--space--pos--1 {
   top: 20%;
   left: 50%;
}

#go__board__stone--lid--inner--space--pos--2 {
   bottom: 20%;
   left: 50%;
}

#go__board__stone--lid--inner--space--pos--3 {
   bottom: 10%;
   left: 30%;
}

#go__board__stone--lid--inner--space--pos--4 {
   bottom: 20%;
   left: 15%;
}

#go__board__stone--lid--inner--space--pos--5 {
   bottom: 35%;
   left: 10%;
}

#go__board__stone--lid--inner--space--pos--6 {
   bottom: 35%;
   left: 40%;
}

#go__board__stone--lid--inner--space--pos--7 {
   top: 10%;
   left: 35%;
}

.tatami__mat__piece__container:has(#go__board__stone__J1__input:checked) .go__board__stone--bowl--lid--inner--space--adjusted {
   visibility: visible;
}

.tatami__mat__piece__container:has(#go__board__stone__J1__input:checked) .go__board__bowl__area--black .go__board__stone--J1 {
   visibility: hidden;
}

.go__board__bowl__wood__pattern__1--variation {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line:);
   --go-board-bowl-wood-line-opacity: 0.1;

   transform-origin: center;
   border-left: none;
   border-top: none;
   filter: blur(0.2px);
   bottom: calc(var(--go-board-bowl--wood-line-offset) * 100%);
   right: calc(var(--go-board-bowl--wood-line-offset) * 100%);
}

.go__board__bowl__wood__pattern__1--variation:nth-of-type(4n + 1) {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
   opacity: 0.2;
}

.go__board__bowl__wood__pattern__1--variation:nth-of-type(-n + 3) {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-2);
}

#go__board__bowl__wood__pattern__1--variation--line--1 {
   --go-board-bowl-wood-line-width: 1;
   --go-board-bowl--wood-line-offset: 0.03;
}

#go__board__bowl__wood__pattern__1--variation--line--2 {
   --go-board-bowl-wood-line-width: 1.05;
   --go-board-bowl--wood-line-offset: 0.06;
}

#go__board__bowl__wood__pattern__1--variation--line--3 {
   --go-board-bowl-wood-line-width: 1.1;
   --go-board-bowl--wood-line-offset: 0.09;
}

#go__board__bowl__wood__pattern__1--variation--line--4 {
   --go-board-bowl-wood-line-width: 1.15;
   --go-board-bowl--wood-line-offset: 0.12;
}

#go__board__bowl__wood__pattern__1--variation--line--5 {
   --go-board-bowl-wood-line-width: 1.2;
   --go-board-bowl--wood-line-offset: 0.15;
}

#go__board__bowl__wood__pattern__1--variation--line--6 {
   --go-board-bowl-wood-line-width: 1.25;
   --go-board-bowl--wood-line-offset: 0.18;
}

#go__board__bowl__wood__pattern__1--variation--line--7 {
   --go-board-bowl-wood-line-width: 1.3;
   --go-board-bowl--wood-line-offset: 0.21;
}

#go__board__bowl__wood__pattern__1--variation--line--8 {
   --go-board-bowl-wood-line-width: 1.35;
   --go-board-bowl--wood-line-offset: 0.24;
}

#go__board__bowl__wood__pattern__1--variation--line--9 {
   --go-board-bowl-wood-line-width: 1.4;
   --go-board-bowl--wood-line-offset: 0.27;
}

#go__board__bowl__wood__pattern__1--variation--line--10 {
   --go-board-bowl-wood-line-width: 1.45;
   --go-board-bowl--wood-line-offset: 0.3;
}

#go__board__bowl__wood__pattern__1--variation--line--11 {
   --go-board-bowl-wood-line-width: 1.5;
   --go-board-bowl--wood-line-offset: 0.33;
}

#go__board__bowl__wood__pattern__1--variation--line--12 {
   --go-board-bowl-wood-line-width: 1.55;
   --go-board-bowl--wood-line-offset: 0.36;
}

#go__board__bowl__wood__pattern__1--variation--line--13 {
   --go-board-bowl-wood-line-width: 1.6;
   --go-board-bowl--wood-line-offset: 0.39;
}

#go__board__bowl__wood__pattern__1--variation--line--14 {
   --go-board-bowl-wood-line-width: 1.65;
   --go-board-bowl--wood-line-offset: 0.42;
}

#go__board__bowl__wood__pattern__1--variation--line--15 {
   --go-board-bowl-wood-line-width: 1.7;
   --go-board-bowl--wood-line-offset: 0.45;
}

#go__board__bowl__wood__pattern__1--variation--line--16 {
   --go-board-bowl-wood-line-width: 1.75;
   --go-board-bowl--wood-line-offset: 0.48;
}

@keyframes lid-shadow-follow {
   from { transform: translateX(0) translateY(0); }
   to { transform: translateX(var(--go-board-outer-shadow-x)) translateY(calc(var(--go-board-bowl-lid-distance-y))); }
}

.go__board__bowl__lid__area--shadow {
   filter: blur(calc(var(--go-board-outer-shadow-blur) * 0.5));
   background-color: var(--color-go-board-outer-shadow);
   z-index: -1;
   animation-name: lid-shadow-follow;
   animation-duration: var(--go-board-bowl-animation-duration);
   animation-delay: var(--go-board-bowl-animation-delay);
   animation-fill-mode: forwards;
   animation-timing-function: ease-in-out;
}

.go__board__bowl__area--black {
   justify-content: flex-end;
   align-self: flex-end;
}

.go__board__bowl__area--black > .go__board__bowl__container {
   --go-board-bowl-lid-distance-y: -150%;
}

.go__board__bowl--wood--align--top {
   align-items: flex-start;
}

.go__board__bowl__lid__area--align--top {
   bottom: auto;
   top: 5%;
}

.go__board__bowl__wood__pattern__2--variation {
   --go-board-bowl-wood-line-opacity: 0.25;

   transform: rotateZ(30deg);
   filter: blur(0px);
   border-top: 1px solid var(--color-go-board-bowl-wood-line);
   border-left: 1px solid var(--color-go-board-bowl-wood-line-variant-2);
   border-right: 1px solid var(--color-go-board-bowl-wood-line-variant-1);
   border-bottom: 1px solid var(--color-go-board-bowl-wood-line);
   top: calc(25% - var(--go-board-bowl-prev-wood-line-width) * 100%);
   left: auto;
   right: calc(25% - (var(--go-board-bowl-prev-wood-line-width) / 2) * 100%);
}

.go__board__bowl__wood__pattern__container--align--separately {
   justify-content: space-evenly;
}

.go__board__bowl__wood__pattern__3 {
   --go-board-bowl-wood-line-width: 1px;
   --go-board-bowl-wood-line-height: 1;
   --go-board-bowl-wood-line-opacity: 0.12;

   transform: rotateZ(10deg);
   width: var(--go-board-bowl-wood-line-width);
   height: calc(var(--go-board-bowl-wood-line-height) * 100%);
   background-color: var(--color-go-board-bowl-wood-line);
   opacity: var(--go-board-bowl-wood-line-opacity);
}

#go__board__bowl__wood__pattern__3--line--1 {
   --go-board-bowl-wood-line-height: 0.4;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--2 {
   --go-board-bowl-wood-line-height: 0.9;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--3 {
   --go-board-bowl-wood-line-height: 0.6;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--4 {
   --go-board-bowl-wood-line-height: 0.3;
}

#go__board__bowl__wood__pattern__3--line--5 {
   --go-board-bowl-wood-line-height: 0.9;
}

#go__board__bowl__wood__pattern__3--line--6 {
   --go-board-bowl-wood-line-height: 0.7;
}

#go__board__bowl__wood__pattern__3--line--7 {
   --go-board-bowl-wood-line-height: 0.8;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--8 {
   --go-board-bowl-wood-line-height: 0.8;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--9 {
   --go-board-bowl-wood-line-width: 1.2px;
   --color-go-board-bowl-wood-line: white;
}

#go__board__bowl__wood__pattern__3--line--10 {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--11 {
   --go-board-bowl-wood-line-height: 0.8;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--12 {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--13 {
   --go-board-bowl-wood-line-height: 0.6;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--14 {
   --go-board-bowl-wood-line-height: 0.7;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--15 {
   --go-board-bowl-wood-line-height: 0.5;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--16 {
   --go-board-bowl-wood-line-height: 0.5;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--17 {
   --go-board-bowl-wood-line-height: 0.7;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-1);
}

#go__board__bowl__wood__pattern__3--line--18 {
   --go-board-bowl-wood-line-height: 0.4;
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-2);
}

#go__board__bowl__wood__pattern__3--line--19 {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-2);
}

#go__board__bowl__wood__pattern__3--line--20 {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-2);
}

#go__board__bowl__wood__pattern__3--line--21 {
   --color-go-board-bowl-wood-line: var(--color-go-board-bowl-wood-line-variant-2);
}

.go__board__bowl__inner__space__level {
   width: 100%;
   height: 100%;
   border-radius: 50%;
   position: absolute;
}

.go__board__bowl__inner__space__shadow__level {
   width: 100%;
   height: 100%;
   position: relative;
   border-radius: inherit;
   z-index: 1;
}

.go__board__stone--bowl--inner--space--adjusted {
   visibility: visible;
   width: 43%;
   z-index: 0;
   box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.15);
}

.go__board__stone--bowl--picking {
   animation-direction: reverse;
}

.go__board__bowl__inner__space__level--1 {
   z-index: 0;
}

.go__board__bowl__inner__space__shadow__level--1 {
   background-color: rgba(0, 0, 0, 0.45);
}

@keyframes tone-down-shadow-bottom-left-level-1 {
   from {
      background: rgba(0, 0, 0, 0.45);
   }
   to {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.35) 30%, rgba(0, 0, 0, 0.45) 80%);
   }
}

@keyframes tone-down-shadow-level-1 {
   from {
      background: rgba(0, 0, 0, 0.45);
   }
   to {
      background: rgba(0, 0, 0, 0.1);
   }
}

.go__board__bowl__area--white .go__board__bowl__inner__space__shadow__level--1 {
   animation: tone-down-shadow-level-1 0s forwards var(--go-board-stone-H2-delay);
}

.go__board__bowl__area--black .go__board__bowl__inner__space__shadow__level--1 {
   animation: tone-down-shadow-bottom-left-level-1 0s forwards var(--go-board-stone-H4-delay);
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--1 {
   top: 60%;
   left: 70%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--2 {
   top: 20%;
   left: 70%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--3 {
   top: 70%;
   left: 40%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--4 {
   top: 0%;
   left: 40%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--5 {
   top: 40%;
   left: 50%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--6 {
   top: 50%;
   left: 20%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--7 {
   top: 20%;
   left: 20%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--8 {
   top: 10%;
   left: -5%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--9 {
   top: 0%;
   left: 20%;
}

.go__board__bowl__inner__space__level--1 #go__board__stone--bowl--inner--space--pos--10 {
   top: 40%;
   left: 0%;
}

.go__board__bowl__inner__space__level--2 {
   z-index: 1;
}

.go__board__bowl__inner__space__shadow__level--2 {
   background: rgba(0, 0, 0, 0.3);
}

@keyframes tone-down-shadow-bottom-left-level-2-1 {
   from {
      background: rgba(0, 0, 0, 0.3);
   }
   to {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.2) 30%, rgba(0, 0, 0, 0.3) 80%);
   }
}

@keyframes tone-down-shadow-bottom-left-level-2-2 {
   from {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.2) 30%, rgba(0, 0, 0, 0.3) 80%);
   }
   to {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.1) 30%, rgba(0, 0, 0, 0.25) 80%);
   }
}

@keyframes tone-down-shadow-level-2-1 {
   from {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.2) 30%, rgba(0, 0, 0, 0.3) 80%);
   }
   to {
      background: rgba(0, 0, 0, 0.25);
   }
}

@keyframes tone-down-shadow-level-2-2 {
   from {
      background: radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.1) 30%, rgba(0, 0, 0, 0.25) 80%);
   }
   to {
      background: rgba(0, 0, 0, 0.1);
   }
}

.go__board__bowl__area--white .go__board__bowl__inner__space__shadow__level--2 {
   animation: tone-down-shadow-bottom-left-level-2-1 0s forwards var(--go-board-stone-F4-delay),
              tone-down-shadow-bottom-left-level-2-2 0s forwards var(--go-board-stone-G4-delay),
              tone-down-shadow-level-2-2 0s forwards var(--go-board-stone-H3-delay);
}

.go__board__bowl__area--black .go__board__bowl__inner__space__shadow__level--2 {
   animation: tone-down-shadow-bottom-left-level-2-1 0s forwards var(--go-board-stone-G5-delay),
              tone-down-shadow-level-2-1 0s forwards var(--go-board-stone-H4-delay);
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--1 {
   top: 25%;
   left: 60%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--2 {
   top: 10%;
   left: 30%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--3 {
   top: 20%;
   left: -20%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--4 {
   top: 40%;
   left: 20%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--5 {
   top: -15%;
   left: 10%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--6 {
   top: 30%;
   left: -10%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--7 {
   top: 70%;
   left: 10%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--8 {
   top: 70%;
   left: 60%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--9 {
   top: 60%;
   left: 40%;
}

.go__board__bowl__inner__space__level--2 #go__board__stone--bowl--inner--space--pos--10 {
   top: -5%;
   left: 80%;
}

.go__board__bowl__inner__space__level--3 {
   z-index: 2;
}

.go__board__bowl__inner__space__shadow__level--3 {
   background: radial-gradient(circle at 20% 90%, transparent 30%, rgba(0, 0, 0, 0.2) 80%);
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--1 {
   top: -10%;
   left: 60%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--2 {
   top: 30%;
   left: 60%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--3 {
   top: 20%;
   left: 20%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--4 {
   top: 50%;
   left: -10%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--5 {
   top: 10%;
   left: 50%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--6 {
   top: 60%;
   left: 20%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--7 {
   top: -15%;
   left: -10%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--8 {
   top: 0%;
   left: -15%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--9 {
   top: 60%;
   left: 60%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--10 {
   top: -20%;
   left: 15%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--11 {
   top: 30%;
   left: -20%;
}

.go__board__bowl__inner__space__level--3 #go__board__stone--bowl--inner--space--pos--12 {
   top: 35%;
   left: 50%;
}

@media (width < 500px) {
   .go__board__bowl__lid__side--inner--space {
      --go-board-bowl-lid-inner-space-border-size: calc(var(--go-board-bowl-lid-border-size));
   }
}
!

JS 

              
                /* Capture the white stones at the end! */
/* For clearer code and file organization, feel free to check it out on https://gitlab.com/css-only/css-only-go-board */
!
999px

Console