<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="utf-8">
<title>test reference</title>
<link rel='author' title='Florian Rivoal' href='https://florian.rivoal.net'>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  font: 20px/1 Ahem;
  white-space: pre;
}
#ref {
  color: orange;
}
#test {
  color: blue;
}

/* this is just filler content to have an invisible last line, as jutification does not affect the last line */
a { color: white; }
</style>

<p>Test passes if the the blue and orange boxes are aligned.

<div id=ref>X   X X   X</div>
<div id=test>X   X X   X</div>