overflow-negative-margin-dynamic.html

<!DOCTYPE html>
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1157299">
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div style="position: relative; width: 100px; height: 100px; box-sizing: border-box; overflow: auto; padding-bottom: 10px;">
  <div style="background: green; margin-bottom: 10px;">
    <div style="height: 100px; margin-bottom: -20px;"></div>
  </div>
  <div id="target" style="position: absolute; top: 0; left: 0;"></div>
</div>
<script>
document.body.offsetTop;
document.getElementById('target').style.top = '10px';
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-overflow/overflow-negative-margin-dynamic.html