<!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/#pseudo-algorithm">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1037790">
<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; background:red;">
  <div id="container" style="columns:3; column-gap:0; column-fill:auto; width:fit-content; height:100px; background:green;">
    <div style="width:25px; height:10px;"></div>
  </div>
</div>
<script>
  document.body.offsetTop;
  container.style.columns = "4";
</script>