onts/ahem.css" />
<style>
div {
  font: 20px/1 Ahem;
}
#test {
  white-space: break-spaces;
  color: green;
  width: 16ch;
}
#ref {
  color: red;
  position: absolute;
  z-index:-1;
}
</style>

<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
<div id=ref>XX<br>XX</div>
<div id=test>XX&#x09;&#x09;XX</div>
