D3 Examples - 💀 CSS only Skull 💀

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<!DOCTYPE html>
<html>
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<head>
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  <meta charset="UTF-8">
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  <title>CSS Minimalist Skull - CodePen</title>
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    <style>
* {
  border: 0;
  margin: 0;
  padding: 0;
  outline: 0;
  box-sizing: border-box;
}
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html, body {
  height: 100%;
}
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body {
  background-color: #000;
}
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.skull {
  width: 250px;
  height: 250px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}
.skull .head {
  width: 100%;
  height: 75%;
  background-color: #fff;
  border-radius: 15% / 20%;
  position: absolute;
  top: 0;
  left: 0;
}
.skull .head:before, .skull .head:after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background-color: #000;
  width: 20%;
  height: 30%;
  bottom: 10%;
}
.skull .head:before {
  left: 10%;
}
.skull .head:after {
  right: 10%;
}
.skull .head .crack {
  width: 10%;
  height: 10%;
  background-color: #000;
  position: absolute;
  top: 0;
  right: 25%;
  transform: skew(-15deg);
}
.skull .head .crack:before {
  content: "";
  position: absolute;
  top: 100%;
  left: 16.66667px;
  border-top: 31.25px solid #000;
  border-right: 12.5px solid transparent;
  border-left: 6.25px solid transparent;
}
.skull .mouth {
  width: 40%;
  height: 25%;
  position: absolute;
  top: 75%;
  left: 30%;
  background-color: #fff;
  border-radius: 0 0 25px 25px;
}
.skull .mouth:before {
  content: "";
  position: absolute;
  width: 15%;
  height: 50%;
  border-radius: 50% / 30%;
  background-color: #000;
  left: 42.5%;
  top: -25%;
}
.skull .mouth .teeth {
  position: absolute;
  bottom: 0;
  left: 45%;
  width: 10%;
  height: 50%;
  margin-bottom: -5%;
  background-color: #000;
  border-radius: 50% / 20%;
}
.skull .mouth .teeth:before, .skull .mouth .teeth:after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50% / 20%;
  background-color: #000;
}
.skull .mouth .teeth:before {
  left: -250%;
}
.skull .mouth .teeth:after {
  right: -250%;
}
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</style>
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    <script src="js/prefixfree.min.js"></script>
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</head>
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<body>
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  <div class='skull'>
  <div class='head'>
    <div class='crack'></div>
  </div>
  <div class='mouth'>
    <div class='teeth'></div>
  </div>
</div>
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  <script src='https://codepen.io/assets/libs/fullpage/jquery.js'></script>
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  <script src="js/index.js"></script>
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</body>
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</html>
    