[axovus]

Anyone have any easy ideas for this one. Some simple html font color codes that I added to my site work great in IE, but not it FF (haven't even checked any other browsers, but 90% of my traffic is between those 2)
here's the site
www.axovus.com

I tried running it through a validator http://validator.w3.org/ and came up with hundreds of errors, but when looking at them, most don't seem to be errors. Most of them are all proper html from what I can tell.

Any suggestions?
Thanks!