chromium/third_party/blink/web_tests/external/wpt/css/css-multicol/multicol-span-all-016.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Multi-column Layout Test: Height of container with a column spanner descendant.</title>
<link rel="help" href="https://www.w3.org/TR/css-multicol-1/#spanning-columns">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<div id="multicol" style="columns:2;">
  <div id="container" style="height:100px; width:0px;" data-expected-bounding-client-rect-height="50">
    <div style="column-span:all;"></div>
  </div>
</div>

<script>
  checkLayout('#container');
</script>