[CSS] CSS animation-timeline

Browser support: https://caniuse.com/?search=animation-timeline

 <!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .scroller {
        width: 400px;
        height: 200px;
        border: 1px black solid;
        overflow-y: auto;
        overflow-x: hidden;
        scroll-timeline: --my-timeline; /* 滚动条元素 */
      }
      .bar {
        position: sticky;
        top: 0;
        height: 3px;
        background-color: red;
        animation-name: move;
        animation-timeline: --my-timeline;
      }
      @keyframes move {
        from {
          width: 0%;
        }
        to {
          width: 100%;
        }
      }
    </style>
  </head>
  <body>
    <h2>CSS animation-timeline (CSS动画时间轴)</h2>
    <div class="scroller">
      <div class="bar"></div>
      <p>111</p>
      <p>222</p>
      <p>333</p>
      <p>444</p>
      <p>555</p>
      <p>666</p>
      <p>777</p>
      <p>888</p>
      <p>999</p>
    </div>
  </body>
</html>

 

Example 2:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .scroller {
        width: 400px;
        height: 200px;
        border: 1px black solid;
        overflow-y: auto;
        overflow-x: hidden;
      }
      .scroller p {
        margin-block: 50px;
        animation-name: move;
        animation-timeline: --my-timeline;
        view-timeline: --my-timeline;
      }
      @keyframes move {
        from {
          font-size: 16px;
        }
        to {
          font-size: 36px;
        }
      }
    </style>
  </head>
  <body>
    <h2>CSS animation-timeline (CSS动画时间轴)</h2>
    <div class="scroller">
      <p>111</p>
      <p>222</p>
      <p>333</p>
      <p>444</p>
      <p>555</p>
      <p>666</p>
      <p>777</p>
      <p>888</p>
      <p>999</p>
    </div>
  </body>
</html>

posted @ 2025-05-13 01:13  Zhentiw  阅读(20)  评论(0)    收藏  举报