gecko-dev/layout/reftests/css-ruby/line-height-4-ref.html

<title>Bug 1134206 - Ruby line spacing adjustment on quirks mode</title>
<script type="text/javascript" src="utils.js"></script>
<div id="base">
  <span id="inline">base</span>
  <span id="text1" style="font-size: 80%; color: transparent">text</span>
  <span id="text2" style="font-size: 50%; color: transparent">text</span>
</div>
next line
<script>
  // Simulate the behavior of ruby layout.
  var base = document.getElementById('base');
  makeBSizeMatchInlineBox(base, document.getElementById('inline'));
  base.style.paddingTop = getBSize(document.getElementById('text1'));
  base.style.paddingBottom = getBSize(document.getElementById('text2'));
</script>