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chromium/third_party/blink/web_tests/external/wpt/compat/green-ref.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>A green 100x100 block</title>
<link rel="author" title="Xidorn Quan" href="[email protected]">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<div style="width: 100px; height: 100px; background: green;"></div>