change-insets-inside-strict-containment-nested.html

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1286841">
<link rel="help" href="https://www.w3.org/TR/css-contain-1/">
<link rel="help" href="https://www.w3.org/TR/css-position-3/#insets">
<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="contain:strict; width:100px; height:100px; background:red;">
  <div id="f1" style="position:fixed; left:100px; width:50px; height:100px; background:green;">
    <div style="contain:strict; width:100px; height:100px;">
      <div id="f2" style="position:fixed; left:100px; width:50px; height:100px; background:green;"></div>
    </div>
  </div>
</div>
<script>
  document.body.offsetTop;
  f1.style.left = "0";
  f2.style.left = "50px";
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-position/change-insets-inside-strict-containment-nested.html