<!-- quirks -->
<title>CSSOM scrollingElement reflects the propagated scroll to viewport correctly</title>
<meta charset="utf-8">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://drafts.csswg.org/css-overflow/#overflow-propagation">
<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-document-scrollingelement">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/5601">
<style>
  body {
    overflow: clip;
  }
</style>
<script>
test(function() {
  assert_equals(document.scrollingElement, document.body);
});
</script>