chromium/third_party/blink/web_tests/external/wpt/css/css-contain/contain-paint-cell-001.html

<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS Containment Test: 'contain: paint' applies to 'table-cell' elements</title>

  <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <link rel="help" href="https://www.w3.org/TR/css-contain-1/#containment-paint">
  <link rel="match" href="reference/contain-paint-047-ref.html">

  <meta content="This test checks that the paint containment applies to table-cell elements. Therefore the content of the table-cell element should be clipped to the padding edge of its principal box." name="assert">

  <style>
  div#table
    {
      display: table;
      font-family: monospace;
      font-size: 100px;
      table-layout: fixed;
      width: 4ch;
    }

  div.column
    {
      display: table-column;
    }

  div#middle-column
    {
      width: 4ch;
    }

  div.row
    {
      display: table-row;
    }

  div.cell
    {
      background-color: white;
      display: table-cell;
    }

  div#contain
    {
      color: green;
      contain: paint;
    }

  span
    {
      background-color: red;
      color: yellow;
    }
  </style>

  <p>Test passes if there is <strong>no red</strong>.

  <div id="table">

    <div class="column"></div><div class="column" id="middle-column"></div><div class="column"></div>

    <div class="row"><div class="cell"></div><div class="cell"></div><div class="cell"></div></div>

    <div class="row"><div class="cell"></div><div class="cell" id="contain">PASS<span>FAIL</span></div><div class="cell"></div></div>

    <div class="row"><div class="cell"></div><div class="cell"></div><div class="cell"></div></div>

  </div>