firefox/testing/web-platform/tests/quirks/line-height-trailing-collapsable-whitespace-ref.html

<!-- quirks mode -->
<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="width:100px; height:100px; background:green;"></div>