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chromium/third_party/blink/web_tests/external/wpt/css/cssom-view/cssom-getBoundingClientRect-vertical-rl-ref.html 

<!DOCTYPE html>
<body style="overflow: hidden">
  <div style="position: absolute; top: 50px; left: 50px; width: 200px; height: 200px; background: green"></div>
</body>