<!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">
<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="columns:2; column-gap:0; width:100px; background:red;">
  <div style="height:100px;"></div>
  <div>
    <div style="column-span:all; height:50px;"></div>
  </div>
  <div style="display:flow-root; height:0;">
    <div style="width:100px; height:100px; margin-top:-100px; background:green;"></div>
  </div>
</div>