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chromium/third_party/blink/web_tests/wpt_internal/css/css-sizing/fill-available-min-width.html 

<!DOCTYPE html>
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div style="width: 100px;">
  <div style="width: 50px; min-width: -webkit-fill-available; height: 100px; background: green;"></div>
</div>