Looking closer at the HTML on the page, the problem looks to be that the following CSS file is not being included on the page:
/media/sourcecoast/css/common.css
That file does exist on your site as I can load it if I go directly to it.
I'm not sure what would be preventing it's loading, since other files like our /media/sourcecoast/themes/sclogin/default.css are included on the page, which comes from the same section of code.
If you're unsure what is going wrong, I'd recommend turning off any caching or optimization scripts you have running and, if it still fails, try a different template (temporarily) to see if the common.css file is being loaded properly. With that information, we'll be able to help diagnose the issue further.
Thanks,
Alex