css/css-multicol/multicol-span-all-005.html

<!DOCTYPE html>
<html>
  <meta charset="utf-8">
  <title>CSS Multi-column Layout Test: Test column-span:all with various display types</title>
  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
  <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-span">
  <link rel="match" href="multicol-span-all-005-ref.html">
  <meta name="assert" content="This test checks a column-span:all element should act like column-span: none if it's under different block formatting context.">

  <style>
  .column {
    column-count: 3;
    column-rule: 6px solid;
    width: 400px;
    outline: 1px solid black;
  }
  .spanner {
    column-span: all;
    outline: 1px solid blue;
  }
  fieldset {
    margin: 0;
    padding: 0;
    border: 0;
  }
  </style>

  <body>
    <article class="column">
      <div>block1</div>
      <table class="spanner">
        <tr>
          <td>table as a spanner</td>
        </tr>
      </table>
      <div>block2</div>
    </article>
    <br>

    <article class="column">
      <div>block1</div>
      <div class="spanner" style="display: grid;">grid as a spanner</div>
      <div>block2</div>
    </article>
    <br>

    <article class="column">
      <div>block1</div>
      <div class="spanner" style="display: flex;">flex as a spanner</div>
      <div>block2</div>
    </article>
    <br>

    <article class="column">
      <div>block1</div>
      <fieldset class="spanner">fieldset as a spanner</fieldset>
      <div>block2</div>
    </article>
    <br>

    <article class="column">
      <div>block1</div>
      <details open class="spanner">details as a spanner</details>
      <div>block2</div>
    </article>
    <br>

  </body>
</html>