position-sticky-scroll-reposition.html

<!doctype html>
<html class="reftest-wait">
<title>Test that style mutation of contain:strict plus position:sticky updates sticky position</title>
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">
<link rel="author" title="Chris Harrelson" href="mailto:[email protected]">
<link rel="match" href="position-sticky-scroll-reposition-ref.html">
<div id="scroller" style="width: 200px; height: 200px; overflow-y: scroll;
                          will-change: transform;">
  <div id="sticky" style="width: 100px; height: 100px; position: sticky; background: lightblue;
                             top: 50px; left: 50px; contain: strict;"></div>
  <div style="width: 100px; height: 500px;"></div>
</div>
<script src="/common/reftest-wait.js"></script>
<script>
  requestAnimationFrame(() =>
      requestAnimationFrame(() => {
    sticky.style.top = '5px';
    takeScreenshot();
  }));
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-position/sticky/position-sticky-scroll-reposition.html