<!DOCTYPE html>
<meta charset="utf-8">
<title>Test reference</title>
<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
.test {
  overflow: hidden;
  white-space: pre;
  font: 100px/1 Ahem;
  width: 2em;
}
.green {
  position: absolute;
  width: 100px;
  height: 100px;
  background: green;
  margin-left: 100px;
}
span {
  vertical-align: sub;
}
</style>

<p>Test passes if there are 3 filled green squares and <