nested-non-auto-inline-size-offset-top.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=1349884">
<div style="position:relative; columns:2; gap:0; width:600px; column-fill:auto; height:100px;">
  <div style="height:70px; contain:size;"></div>
  <div style="width:40px; column-width:20px; gap:0; column-fill:auto;">
    <div style="height:20px;"></div>
    <div id="secondouter" style="height:50px; contain:size;"></div>
  </div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  test(()=> {
    assert_equals(secondouter.offsetTop, 0);
  }, "offsetTop on element in second outer column");
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-multicol/nested-non-auto-inline-size-offset-top.html