[CSS] CSS @scope

Browser support: https://caniuse.com/?search=%40scope

 

Example 1: global @scope ()

<!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>
      @scope (ul) {
        li {
          background-color: red;
        }
      }
    </style>
  </head>
  <body>
    <h2>CSS @scope (CSS作用域)</h2>
    <ul>
      <li>111</li>
      <li>222</li>
      <li>333</li>
    </ul>
    <ol>
      <li>aaa</li>
      <li>bbb</li>
      <li>ccc</li>
    </ol>
  </body>
</html>

 

Example 2: Styling @scope () itself with :scope

<!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>
      @scope (ul) {
        /* 选择自身 */
        :scope {
          border: 3px black solid;
        }
        li {
          background-color: red;
        }
      }
    </style>
  </head>
  <body>
    <h2>CSS @scope (CSS作用域)</h2>
    <ul>
      <li>111</li>
      <li>222</li>
      <li>333</li>
    </ul>
    <ol>
      <li>aaa</li>
      <li>bbb</li>
      <li>ccc</li>
    </ol>
  </body>
</html>

 

Example 3: using @scope () to (): to exclue elements

<!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>
      /* 排除to */
      @scope (ul) to (ol) {
        li {
          background-color: red;
        }
      }
    </style>
  </head>
  <body>
    <h2>CSS @scope (CSS作用域)</h2>
    <ul>
      <li>111</li>
      <li>222</li>
      <li>333</li>
      <ol>
        <li>aaa</li>
        <li>bbb</li>
        <li>ccc</li>
      </ol>
    </ul>
  </body>
</html>

 

Example 4: @scope inside element

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <h2>CSS @scope (CSS作用域)</h2>
    <div>
      <style>
        @scope {
          li {
            background-color: red;
          }
        }
      </style>
      <ul>
        <li>111</li>
        <li>222</li>
        <li>333</li>
      </ul>
    </div>
    <ul>
      <li>aaa</li>
      <li>bbb</li>
      <li>ccc</li>
    </ul>
  </body>
</html>

posted @ 2025-05-11 15:11  Zhentiw  阅读(12)  评论(0)    收藏  举报