YOURSITE.x10.mx/foss.css gives a 404 Not Found.
99% of the Web is *nix based.
Microsoft garbage, er products, insist on doing things their own way.
*nix is case sensitive. Windows is not.
On windows, foss.css will get you Foss.css.
On *nix it will not.
Either change your all your css links to Foss.css (as the file is named on the server) or just change the name of the file to foss.css to match the links.
EDIT/ADD: Not sure what the problem is with some of the images. Some show up, some don't. Check spelling, capitalization, and make sure they have been uploaded.
Rant #2 : No spaces in file names. No punctuation , other than . and -