The original page (opens new window).  Note margin styles on head1, .copy.

The same page with transitional XHTML 1.0 doctype (opens new window).  Note margins have disappeared.

The same page with HTML 4.01 transitional (opens new window).  Note margins have disappeared.

My style sheet saved as txt (opens new window).  Note .copy margin settings, h1 margin settings.

My test browsers are IE 6, Mozilla 1.3a, and Netscape 6.2 running on Windows 2000 Server.