[SOLVED] Menu remains list, all serif fonts disabled

http://www.chongsworship.com/

Hi there, I had arranged the CSS almost exactly as I wanted it and was just changing the serif font stacks in the various ATO options to include linux fonts as well. Unfortunately, one of these changes completely broke the site layout. I found a missing semicolon and corrected it but it's still broken (not cache issue). Do you have any idea what else I changed by mistake? Current issues are:
- menu is a <ul> list of links and doesn't have any of the customisation in the ATO > page menu bar
- all serif fonts are disabled in various sections (sidebar widgets, post title, comments, pages)
- header is no longer aligned (should be title directly on top of the tagline, near the mid-bottom left of the header image)

Any idea what I did wrong or am I going to have to reset all options? Seems a bit of a waste as it is hopefully just one change, being so sudden. Thanks in advance.