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HTML

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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).

Add External Stylesheets/Pens

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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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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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HTML 

              
                <div role="img" aria-label="A cartoon of a bottle of curry powder"> Curry
Powder</div>

<a id="youtube" href="https://www.youtube.com/watch?v=1SCCwqehAYA" target="_blank">
  See how this drawing was made
</a>
!

CSS 

              
                div {
  width: 50vmin;
  height: 45vmin;
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 3vmin;
  top: 60%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50% 50% 6% 6% / 6% 6% 4% 4%;
  background:
    radial-gradient(70% 170%, transparent, #f003),
    radial-gradient(farthest-side at 0% 30%, #3007 60%, transparent 80%) no-repeat 0.25% 8% / 2% 35%,
    radial-gradient(farthest-side at 100% 30%, #3216 60%, transparent 80%) no-repeat 99.25% 8% / 2% 20%,
    radial-gradient(farthest-side at 0% 70%, #0007 60%, transparent 80%) no-repeat 0.25% 100% / 2% 20%,
    radial-gradient(farthest-side at 0% 50%, #fffa, transparent 80%) no-repeat 1px 0% / 3% 100%,
    radial-gradient(farthest-side at 50% 0%, transparent, #ffa7 30%, transparent) no-repeat 0% 5% / 90% 5%,
    radial-gradient(farthest-side at 100% 0%, #0003 30%, transparent) no-repeat 100% 5% / 40% 5%,
    radial-gradient(farthest-side at 0% 0%, #0001 30%, transparent) no-repeat 0% 5% / 40% 5%,
    radial-gradient(farthest-side at 0% 50%, #0002, transparent 80%) no-repeat 0% 0% / 15% 100%,
    radial-gradient(farthest-side at 100% 50%, #0001, transparent 80%) no-repeat 100% 0% / 15% 100%,
    /* logo */
    conic-gradient(at 50% 0%, transparent 145deg, #25a 0 215deg, transparent 0) no-repeat 45.5% 21.25% / 3vmin 1.75vmin,
    conic-gradient(at 50% 0%, transparent 145deg, #25a 0 215deg, transparent 0) no-repeat 49.5% 21.25% / 3vmin 1.75vmin,
    conic-gradient(at 50% 0%, transparent 141deg, #25a 0 215deg, transparent 0) no-repeat 53.25% 21.25% / 3vmin 1.75vmin,
    linear-gradient(#25a 20%, #36c) no-repeat 46.5% 26.75% / 1vmin 5.5vmin,
    linear-gradient(#25a 20%, #36c) no-repeat 50.5% 26.75% / 1vmin 5.5vmin,
    linear-gradient(#25a 20%, #36c) no-repeat 54.75% 26.75% / 1vmin 5.5vmin,
    linear-gradient(white, white) no-repeat 50% 23.5% / 8vmin 8vmin,
    linear-gradient(#25a, #36c) no-repeat 50% 23% / 9vmin 9vmin,
    /* sticker */
    linear-gradient(-5deg, transparent 23%, red 23.1% 33%, #ffd 33.1% 60%, lightgray 60.05%, darkgray 63%, red 0 70%, transparent 0) no-repeat 0 0 / 100% 100%,
    linear-gradient(red, red) no-repeat 50% 21% / 12vmin 12vmin,
    /* content */
    radial-gradient(#0005 2.5%, transparent 0) 0 0 / 11vmin 11vmin,
    radial-gradient(#f002 4%, transparent 6%) 3vmin 3vmin / 13vmin 13vmin,
    radial-gradient(#0001 4%, transparent 80%) 3vmin 3vmin / 13vmin 13vmin,
    radial-gradient(#fa0f 3%, transparent 0) 4vmin 34vmin / 9vmin 9vmin,
    radial-gradient(#fb5 3.5%, transparent 4.5%) 5vmin 0vmin / 7vmin 7vmin,
    radial-gradient(#fff4 2.5%, transparent 3.5%) 3vmin 4vmin / 17vmin 17vmin,
    radial-gradient(#0006 2.5%, transparent 3.5%) 4vmin 0vmin / 5vmin 5vmin,
    radial-gradient(#fb5f 2.5%, transparent 3.35%) 5vmin 5vmin / 3vmin 3vmin,
    radial-gradient(#ff04 3.5%, transparent 4.5%) 0 0 / 10vmin 12vmin,
    radial-gradient(#0005 2.5%, transparent 2.75%) 2vmin 4vmin / 7vmin 9vmin,
    
    radial-gradient(#0f05 2.5%, transparent 0) 0 0 / 13vmin 11vmin,
    radial-gradient(#0002 4%, transparent 6%) 3vmin 3vmin / 13vmin 16vmin,
    radial-gradient(#0001 4%, transparent 80%) 17vmin 13vmin / 13vmin 13vmin,
    radial-gradient(#fa0f 3%, transparent 0) 4vmin 34vmin / 19vmin 20vmin,
    radial-gradient(#fb5a 3.5%, transparent 4.5%) 5vmin 0vmin / 17vmin 3vmin,
    radial-gradient(#fff4 2.5%, transparent 3.5%) 3vmin 4vmin / 12vmin 18vmin,
    radial-gradient(#0006 2.5%, transparent 3.5%) 4vmin 0vmin / 10vmin 15vmin,
    radial-gradient(#fb5f 2.5%, transparent 3.35%) 5vmin 5vmin / 14vmin 4vmin,
    radial-gradient(#ff04 3.5%, transparent 4.5%) 0 0 / 7vmin 7vmin,
    radial-gradient(#0005 2.5%, transparent 2.75%) 2vmin 4vmin / 4vmin 6vmin
    ;
  background-color: #fa0; #ea3;
  box-sizing: border-box;
  font-size: 6vmin;
  font-style: italic;
  font-family: Georgia, Garamond, 'Times New Roman', serif;
  white-space: pre;
  line-height: 5vmin;
  text-align: center;
  color: #222d;
  filter: drop-shadow(1.5vmin 1.5vmin 4vmin #0009);
  box-shadow:
    inset 1vmin 0 3vmin #fff8,
    inset -2vmin 0 2vmin #0003,
    inset 2vmin 0 2vmin #0003,
    inset 0 500vmin 1vmin -498vmin #1006,
    inset 9vmin 0 5vmin -3vmin #0003,
    inset -9vmin 0 5vmin -3vmin #0003,
    inset 0 -2vmin 1vmin -1vmin #555a,
    0.25vmin 2vmin 3vmin -1vmin #5328;
}

div::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1%;
  display: block;
  width: 98%;
  height: 35%;
  background:
    radial-gradient(farthest-side at 0% 30%, #fff4, transparent) no-repeat 1px 0% / 4% 100%,
    radial-gradient(70% 170% at 50% 40%, transparent 50%, #0002),
    linear-gradient(to right, #0001, #0000, #0002),
    linear-gradient(transparent 25%, #0003 0 calc(25% + 0.75px), transparent 0),
    radial-gradient(70% 170% at 50% -30%, #d00, transparent 55%, #00000013 70%, #0003 0 calc(70% + 0.25px), #f22 0, #f00 90%) 50% 40% / 35% 40%,
    linear-gradient(#b00, #f00) 50% 27.5% / 35% 10%
    ;
  background-repeat: no-repeat;
  background-color: red;
  border-radius: 15% 15% 2% 2% / 2% 2% 2% 2%;
  transform: translate(0, -94%);
  box-shadow:
    inset 7vmin 0 5vmin -3vmin #0001,
    inset -7vmin 0 5vmin -3vmin #0002,
    0 -7vmin 0 -6vmin #d00,
    inset 0 1vmin 1.5vmin -1.25vmin #fff8
    ;
}

div::after {
  content: "The CSS Taste You Trust\2122";
  white-space: pre;
  display: block;
  position: absolute;
  width: 70%;
  height: 60%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) skewY(-5deg);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  text-align: center;
  line-height: 5vmin;
  color: #fffe;
  font-weight: 500;
  font-size: 2.5vmin;
  font-family: Helvetica, Arial, Verdana, serif;
  font-style: initial;
  filter: blur(0.25px);
}


/***/

#youtube {
  z-index: 2;
  display: block;
  width: 100px;
  height: 70px;
  position: absolute;
  bottom: 30px;
  right: 30px;
  background: red;
  border-radius: 50% / 11%;
  transition: transform 0.5s;
  font-size: 0;
}

#youtube:hover,
#youtube:focus {
  transform: scale(1.1);
}

#youtube::before {
  content: "";
  display: block;
  position: absolute;
  top: 7.5%;
  left: -6%;
  width: 112%;
  height: 85%;
  background: red;
  border-radius: 9% / 50%;
}

#youtube::after {
  content: "";
  display: block;
  position: absolute;
  top: 20px;
  left: 40px;
  width: 45px;
  height: 30px;
  border: 15px solid transparent;
  box-sizing: border-box;
  border-left: 30px solid white;
}
!

JS
!
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