I found why I don't see your style correctly and not sure what to think about it. I tested on my Mac with Safari and Opera and it shows complete, on latest FF it comes in empty. I solved it by disabling adblock plus ...

might have a look into this since the plugin is widely used and it prevents your css to load.

That's bad that is as the css used is just the same to what others would use to show their background images like I have done. I will look into it though.