gecko-dev/layout/reftests/bugs/1062108-1.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bug 1062108</title>
<style>
body {
  font-family: "Droid Sans Mono", Monaco, monospace;
  font-weight: bold;
}
</style>
</head>
<body>
10 spaces: &quot;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;
</body>
</html>