error.html

<!--
  Adapted from an experiment by Piotr Galor.
  See: https://codepen.io/pgalor/pen/OeRWJQ
-->
<style>
  @keyframes glitch {
    2%,
    64% {
      transform: translate(2px, 0) skew(0deg);
    }

    4%,
    60% {
      transform: translate(-2px, 0) skew(0deg);
    }

    62% {
      transform: translate(0, 0) skew(5deg);
    }
  }

  @keyframes glitchBotom {
    2%,
    64% {
      transform: translate(-2px, 0);
    }

    4%,
    60% {
      transform: translate(-2px, 0);
    }

    62% {
      transform: translate(-22px, 5px) skew(21deg);
    }
  }

  @keyframes glitchTop {
    2%,
    64% {
      transform: translate(2px, -2px);
    }

    4%,
    60% {
      transform: translate(-2px, 2px);
    }

    62% {
      transform: translate(13px, -1px) skew(-13deg);
    }
  }

  body {
    display: flex;
    width: 100vw;
    height: 100vh;
    align-items: center;
    justify-content: center;
    margin: 0;
    font-size: 5em;
    font-family: monospace;
    background: black;
    color: white;
  }

  div {
    animation: glitch 1s linear infinite;
  }

  div:before,
  div:after {
    content: attr(title);
    position: absolute;
    left: 0;
    top: 0;
  }

  div:before {
    animation: glitchTop 1s linear infinite;
    clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
  }

  div:after {
    animation: glitchBotom 1.5s linear infinite;
    clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
  }
</style>

<div title="404">404</div>