ation-fill-mode">
<meta name="flags" content="animated">
<meta name="assert" content="Check that animation-fill-mode applies to the ::before pseudo element.">
<style>
  div::before {
    animation-name: sample;
    animation-duration: 5s;
    animation-fill-mode: forwards;

    background-color: blue;
    content: "Filler Text";
    display: block;
    height: 100px;
    width: 100px;
    position: relative;
  }
  @keyframes sample {
    from {
      background-color: yellow;
    }
    to {
      background