chromium/third_party/blink/web_tests/external/wpt/css/CSS2/floats/float-paint-relayout.html

<!DOCTYPE html>
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1049973">
<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; height: 100px; background: red; overflow: auto;">
  <div id="target" style="display: none; float: left; width: 100px; height: 100px; background: green;"></div>
</div>
<script>
document.body.offsetTop;
document.getElementById('target').style.display = 'block';
</script>