Is there a way to load a different CSS file for a specific browser?
like (poor pseudo code):
if firefox
You can use conditional comments to target IE browsers. Look at this: http://css-tricks.com/how-to-create-an-ie-only-stylesheet/. To target firefox you can check this answer: https://stackoverflow.com/a/953491/1941910. But I think there's no need to target firefox, chrome or safari, they all do a good job applying CSS.