testing/web-platform/tests/css/css-contain/contain-paint-ignored-cases-internal-table-001a.html


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<!DOCTYPE html>
<html>
  <head>
    <meta charset=utf-8>
    <title>CSS-contain test: paint containment on internal table elements except table-cell.</title>
    <link rel="author" title="Yusuf Sermet" href="mailto:ysermet@mozilla.com">
    <link rel="help" href="https://drafts.csswg.org/css-contain/#containment-paint">
    <link rel="match" href="contain-paint-ignored-cases-internal-table-001-ref.html">
    <meta name="assert" content="Paint containment should not apply to internal table elements except table-cell. This test testes only the tr element, and confirms contain:paint does not create a stacking context.">
    <style>
      tr {
        contain: paint;
        z-index: 10;
      }
      th {
        background-color: blue;
        padding-left: 50px;
      }
      caption {
        position: fixed;
        background-color: yellow;
        z-index: 2;
      }
    </style>
  </head>
  <body>
    <table>
      <caption>PASS</caption>
      <tr>
        <th>&emsp;</th>
      </tr>
    </table>
  </body>
</html>