css Audio - Active file-generic CSS - Active Generic - Active HTML - Active JS - Active SVG - Active Text - Active file-generic Video - Active header Love html icon-new-collection icon-person icon-team numbered-list123 pop-out spinner split-screen star tv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              h1
  = "Example for "
  a(href="http://kizu.ru/en/blog/counters-and-stones/", target="_blank") my article
  = " about counters logic in CSS."

//- Variables shoule be odd, not all render ok,
//- but 3x3, 13x13, 15x15, 19x19 are fine
//- (those > 13x13 can be buggy in Edge)
- const rows = 13;
- const columns = 13;
- const winCombo = 5;

form.board(style=`--rows:${rows};--columns:${columns}`)
  - for (var i = 1; i <= rows * columns; i++)
    input(id=`Black${i}`, type='radio', style=`--stone:B${i};--notstone:W${i}`)
  - for (var i = 1; i <= rows * columns; i++)
    input(id=`White${i}`, type='radio', style=`--stone:W${i};--notstone:B${i}`)
  header
    p
      = 'Current turn: '
      span
      
    button(type='reset') Restart
  section
    - for (var i = 1; i <= rows * columns; i++)
      label(for=`Black${i}`, style=`--stone:B${i}`): span
  section
    - for (var i = 1; i <= rows * columns; i++)
      label(for=`White${i}`, style=`--stone:W${i}`): span
  footer
    button(type='reset') Play again!

//- Here we have selectors which should has parts based on the board dimensions
//- and the number of stones in a row required to win.
//- I generate those selectors there so you'd need to change only the variables here and leave everything else to CSS.
- let check1 = ''
- let check2 = ''
- for (var i = 1; i < winCombo; i++)
  - check1 += `:not(:nth-child(${ columns }n-${ i - 1 }))`
  - check2 += `:not(:nth-child(${ columns }n+${ i }))`

style.
  /* ⋯ */ #{ check1 }[id^=W]:checked #{' + :checked'.repeat(winCombo - 1)} ~ footer,
  /* ⋰ */ #{ check2 }[id^=W]:checked #{ ('+' + '*+'.repeat(columns - 2) + ':checked').repeat(winCombo - 1) } ~ footer,
  /* ⋮  */ [id^=W]:checked #{ ('+' + '*+'.repeat(columns - 1) + ':checked').repeat(winCombo - 1) } ~ footer,
  /* ⋱ */ #{ check1 }[id^=W]:checked #{ ('+' + '*+'.repeat(columns) + ':checked').repeat(winCombo - 1) } ~ footer {
    --endgame: grid;
    --endmessage: 'White won!';
  }

  /* ⋯ */ #{ check1 }#{':checked + '.repeat(winCombo - 1)} [id^=B]:checked ~ footer,
  /* ⋰ */ #{ check2 }#{ (':checked+' + '*+'.repeat(columns - 2)).repeat(winCombo - 1) } [id^=B]:checked ~ footer,
  /* ⋮  */ #{ (':checked+' + '*+'.repeat(columns - 1)).repeat(winCombo - 1) } [id^=B]:checked ~ footer,
  /* ⋱ */ #{ check1 }#{ (':checked+' + '*+'.repeat(columns)).repeat(winCombo - 1) } [id^=B]:checked ~ footer {
    --endgame: grid;
    --endmessage: 'Black won!';
  }

            
          
!
            
              /* Turn-passing counters magic omg */
.board > input {
  counter-increment: var(--stone) 10;
}
.board > input:checked {
  counter-increment: White 10 Black -10 var(--stone) 100 var(--notstone) -10;
}
.board > input[id^=White]:checked {
  counter-increment: White -10 Black 10 var(--stone) 100 var(--notstone) -10;
}

.board {
  --stone-size: 30px;
  --playfield-width: calc(var(--columns) * var(--stone-size));
  --playfield-height: calc(var(--rows) * var(--stone-size));

  counter-reset: White 0 Black 10;
}

/* Visually hiding inputs */
.board > input {
  position: fixed;
  top: -99em;
  left: -99em;
  clip: rect(1px,1px,1px,1px);
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* Stones! */
.board > section > label {
  visibility: hidden;

  position: relative;

  display: flex;
  flex-wrap: wrap;

  box-sizing: border-box;
  height: var(--stone-size);
  width: var(--stone-size);

  cursor: pointer;

  font-size: var(--stone-size);
}
.board > section > label > span,
.board > section > label > span:before {
  visibility: visible;
  content: '';

  position: relative;

  display: flex;
  flex-wrap: wrap;
  flex-grow: 1;

  width: 0;
  height: var(--stone-size);
}
.board > section > label:hover > span:before {
  width: var(--stone-size);
}
.board > section > label > span:before {
  border-radius: 50%;
  box-shadow:
    inset -0.3em -0.1em 0.8em 0em #000,
    inset -.2em -0.3em 0.4em 0.25em #000,
    inset 1em 0 #AAA;
  background: rgba(0,0,0,0.5);
  transform: scale(0.95)
}
.board > section > label[for^=White] > span:before {
  box-shadow:
    inset -1px -1px 1.9px #000,
    inset 1em 0 #FFF;
  background: rgba(0,0,0,0.3);
  transform: scale(0.98)
}
.board > section > label:after,
.board > section > label > span:after {
  content: counter(Black) counter(var(--stone));

  flex-basis: 100%;
  font-size: 10px;
  position: relative;
  padding-left: calc(100% - 3.5ch);
  box-sizing: border-box;
}
.board > section > label[for^=White]:after {
  content: counter(White) counter(var(--stone));
}
.board > section > label > span:after {
  visibility: hidden;
  content: counter(var(--stone));

  padding-left: calc(100% - 2.5ch);
}

/* Layout and other misc stuff */
.board {
  position: relative;

  display: grid;
  grid-template-columns: 1fr min-content 1fr;

  padding: 0;
  margin: auto;
}

/* Label wrappers */
.board > section {
  display: grid;
  grid-column: 2;
  grid-row: 1;
  grid-template-columns: repeat(var(--columns), var(--stone-size));

  width: var(--playfield-width);
  height: var(--playfield-height);
}

/* Turn marker & reset */
.board > header {
  display: flex;
  flex-wrap: wrap;
  padding: var(--stone-size) calc(0.5 * var(--stone-size));
  justify-content: space-between;
  align-items: center;
  grid-column: 2;
  grid-row: 2;
}
.board > header > button {
  visibility: hidden;
}
.board > :checked ~ header > button {
  visibility: inherit;
}

/* Turn marker logic */
.board > header > p {
  margin: 0;
}
.board > header > p > span {
  display: inline-flex;
  flex-wrap: wrap;
  width: var(--stone-size);
  height: var(--stone-size);
  overflow: hidden;
  vertical-align: middle;
  font-size: var(--stone-size);
}
.board > header > p > span:before {
  content: "";
  position: relative;

  flex-grow: 1;

  width: 0;
  height: 100%;

  border-radius: 50%;
  box-shadow:
    inset -1px -1px 1.9px #000,
    inset 1em 0 #FFF;
  background: rgba(0,0,0,0.3);

  transform: scale(0.98)
}
.board > header > p > span:after {
  content: counter(White);

  position: relative;
  flex-basis: 100%;

  box-sizing: border-box;
  height: 100%;
  padding-left: calc(100% - 1.5ch);

  color: transparent;

  border-radius: 50%;
  box-shadow:
    inset -0.3em -0.1em 0.8em 0em #000,
    inset -.2em -0.3em 0.4em 0.25em #000,
    inset 1em 0 #AAA;
  background: rgba(0,0,0,0.5);

  transform: scale(0.95)
}

/* The block with the win message */
.board > footer {
  grid-column: 2;
  grid-row: 1;

  z-index: 99;

  display: var(--endgame, none);

  justify-content: center;
  text-align: center;
  align-content: center;

  grid-gap: 1em;
  margin: calc(-0.5 * var(--stone-size));

  font: 40px/1.5 Hevetica Neue, Arial, sans-serif;
  color: #000;

  background: rgba(255,255,255,0.9);
}
.board > footer:before {
  content: var(--endmessage);
}

/* New game after win button */
.board > footer > button {
  font-size: 1em;
  border: 2px solid;
  padding: 0.5em 1em;
  border-radius: 9em;
  background: #FFF;
  cursor: pointer;
}

/* The board visuals */
.board:before {
  content: "";

  grid-column: 2;
  grid-row: 1;

  width: calc(var(--playfield-width) + var(--stone-size));
  height: calc(var(--playfield-height) + var(--stone-size));
  margin: calc(-0.5 * var(--stone-size));

  --dotsSizeX: calc(var(--stone-size) * (var(--columns) + 1) - var(--stone-size) * 8);
  --dotsSizeY: calc(var(--stone-size) * (var(--rows) + 1) - var(--stone-size) * 8);
  --dotsPositionX: calc(var(--stone-size) * (var(--columns) + 1) / 2);
  --dotsPositionY: calc(var(--stone-size) * (var(--rows) + 1) / 2);
  background:
    radial-gradient(closest-side circle, #000 3px, transparent 4px)
      var(--dotsPositionX) var(--dotsPositionY)/var(--dotsSizeX) var(--dotsSizeY),
    radial-gradient(closest-side circle, #000 3px, transparent 4px)
      50%,
    linear-gradient(#DCB35C calc(var(--stone-size) - 2px), transparent 0)
      0 0/100% calc(var(--stone-size) * var(--rows) + 2px),
    linear-gradient(to right, #DCB35C calc(var(--stone-size) - 2px), transparent 0)
      0 0/calc(var(--stone-size) * var(--columns) + 2px) 100%,
    linear-gradient(#000 var(--stone-size), transparent 0)
      0 0/100% calc(var(--stone-size) * var(--rows)),
    linear-gradient(to right, #000 var(--stone-size), transparent 0)
      0 0/calc(var(--stone-size) * var(--columns)) 100%,
    linear-gradient(#000 2px, transparent 0)
      -1px -1px/var(--stone-size) var(--stone-size),
    linear-gradient(to right, #000 2px, transparent 0)
      -1px -1px/var(--stone-size) var(--stone-size)
    #DCB35C;
}

/* Some visual styles for the page */
html, body {
  padding: 0;
  margin: 0;
}

body {
  min-height: 100vh;
  text-align: center;
}

h1 {
  margin-bottom: 1em;
}
            
          
!
            
              // JS? What JS? HTML & CSS only, yep yep.
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console