I'm new really to theme designing and have come quite some way in designing this one (here is a link to the zip file, so you can look at all my files in detail if you want). I'm testing this locally, rather than on a live site unfortunately, but I'm having some major render problems in Firefox and Opera (probably Safari also, not tested yet) that I'm not having in IE or Chrome (working perfectly there). In firefox, everything is out of place and featured posts don't render at all, and in Opera the problem is more minor, only the footer doesn't render properly. I was wondering if there are any glaring problems in my theme (or any other issue you can think of) that may help me in resolving these issues.
Thanks for your time!