LayoutTests/fast/inline/line-height-in-non-standards-mode.html

<style>
div {
  line-height: 10;
  width: 200px;
  font-family: Ahem;
  font-size: 50px;
  background-color: green;
  color: green;
}
</style>
<div><span style="font-size: 50%">X</span></div>