<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<style>
@font-face {
  font-family: test;
  src: url(resources/LinLibertine_Re-4.7.5.woff);
}
body {
  font: 36px test; /* use a font that includes ligatures for "fi" etc */
}
.a {
  display: inline-block;
  width: 10px;
}
</style>
</head>
<body>
of<span class=a>&nbsp;</span>fice
</body>
</html>