<!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/#spanning-columns">
<meta name="assert" content="Spanners may be not be nested formatting context roots - then the element becomes regular column content">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="width:100px; height:100px; background:red;">
  <div style="width:fit-content; columns:4; column-gap:0; background:green;">
    <div style="display:flow-root;">
      <div style="column-span:all;">
	<div style="width:25px; height:400px;"></div>
      </div>
    </div>
  </div>
</div>
