contain-layout-breaks-002.html | Explore in Territory

<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS-contain test: layout containment and forced breaks</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <meta content="forced breaks within layout containment do not propagate to the parent." name="assert">

  <link href="reference/contain-layout-breaks-002-ref.html" rel="match">

  <link href="https://drafts.csswg.org/css-contain-1/#containment-layout" rel="help">
  <link href="https://drafts.csswg.org/css-break-3/#forced-break" rel="help">

  <style>
  article
    {
      column-fill: auto; /* columns are filled sequentially */
      column-gap: 0em;
      columns: 2 100px; /* 2 columns each 100px wide */
      float: left; /* to make multi-column element shrink-wrap */
      height: 400px; /* give more than enough to go wrong */
    }

  div#yellow-normal
    {
      border-top: yellow solid 100px;
    }

  div#blue-parent
    {
      border-top: blue solid 100px;
      contain: layout;
    }

  div#orange-child
    {
      border-top: orange solid 100px;
      break-before: column;
    }
  </style>

  <p>Test passes if there is a) a blue square below a yellow square and b) an orange square below a blue square.

  <article>

    <div id="yellow-normal"></div>

    <div id="blue-parent">
      <div id="orange-child"></div>
    </div>

  </article>
chromium/third_party/blink/web_tests/external/wpt/css/css-contain/contain-layout-breaks-002.html
