Webkit (CSS) Not working in Garrysmod Loading?

How it normally looks:

http://puu.sh/na9Yg/e3d212ba95.jpg

How garrysmod makes it look:

I’ve singled it down to the -webkit functions in my CSS stylesheet not working on the “garrysmod browser”. Is there a way to fix compatibility for this without having to redo most of the code?

I don’t know allot about this, but it’s likely due to how shitty awesomium is. That being said I’ve never had any issues with any of my loading screens. Perhaps use a static image for the background and logo and a gif for the spinner? That maybe a good alternative.