first and foremost, you have 2 calls to branding.css.
secondly, you have this in your leftnav.css file:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>404 Not Found</TITLE>
</HEAD><BODY>
<H1>Not Found</H1>
The requested URL /styles/3col_leftNav.css was not found on this server.<P>
<P>Additionally, a 404 Not Found
error was encountered while trying to use an ErrorDocument to handle the request.
<HR>
<ADDRESS>Apache/1.3.37 Server at fannixonline.com Port 80</ADDRESS>
</BODY></HTML>
take care of the above, then insert all your css code on the page. once it works well, move them back to a css file.
That should work.