<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/CSS22/box.html#collapsing-margins">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=967193">
<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="A vertical percentage padding that resolves to 0 shouldn't prevent margins from collapsing through the box">
<p>Test passes if there is a filled green square.</p>
<div style="float:left; width:100px; background:green;">
  <div id="container" style="width:100px;">
    <div style="width:100px; margin-bottom:100px;"></div>
    <div style="padding:100% 0;"></div>
    <div style="width:100px; margin-top:100px;"></div>
  </div>
</div>
<script>
  document.body.offsetTop;
  container.style.width = "0";
</script>
