css/css-scrollbars/scrollbar-width-paint-003.html

<!doctype html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS Scrollbars: scrollbar-width correctly updates with overflow: scroll</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="match" href="scrollbar-width-paint-003-ref.html">
<link rel="help" href="https://www.w3.org/TR/css-scrollbars-1/">
<script src="/common/reftest-wait.js"></script>
<style>
  :root {
    overflow: scroll;
    scrollbar-width: thin;
    scrollbar-color: green green;
  }
</style>
<script>
  requestAnimationFrame(() => requestAnimationFrame(() => {
    document.documentElement.style.scrollbarWidth = 'auto';
    takeScreenshot();
  }));
</script>