To work as intended, your CSS style sheet needs a correct document parse tree. This means you should use valid HTML.
Parse error - Unrecognized : <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> <HTML> <HEAD> <TITLE>Bach's home page</TITLE> <STYLE type="text/css"> BODY { font-family: "Gill Sans", sans-serif; font-size: 12pt; margin: 3em; }
