Hello uses style.css

lib/hello.html

@@ -1,6 +1,7 @@
 <!-- Author: Gabriel Wolf (g.a.wolf@reading.ac.uk) -->
 <html>
   <head>
+    <link type="text/css" rel="stylesheet" media="all" href="style.css" />
   </head>
   <body>
     <h>Hello, World!</h>