css/css-multicol/multicol-nested-column-rule-003.html

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-multicol-1/#column-gaps-and-rules">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
  .mc {
    columns: 2;
    column-gap: 20px;
    column-rule: 20px solid green;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="mc" style="column-fill:auto; width:100px; height:100px; background:red;">
  <div class="mc">
    <div style="background:green;">
      <div style="height:10px; break-after:column;"></div>
      <div style="height:10px; break-after:column;"></div>
      <div style="height:200px;"></div>
    </div>
  </div>
</div>