<!DOCTYPE html>
<head>
<style type="text/css">
@font-face {
  font-family: foo;
  src: url(Prototype.ttf);
}
body {
  font-family: foo;
  font-size: 2000px;
  font-weight: 900;
}
</style>
</head>
<body>
xyzzy
</body>
</html>