[Dan Zollman]

I'd start by proofreading the HTML. The head and body elements are a little scrambled up, and there are two opening body tags. Put the style and link tags into the head section.

Also check the rest of the structure--make sure tags are nested properly, the document is organized into a tree, etc.

No problems with the CSS jump out at me, but it'll be hard to tell until the HTML is fixed and reorganized.