I followed Font Awesome 4.0 really, I am not really the biggest expert on CSS advanced features like wildcard selectors, but as someone else said, I think there's performance hits.

But really, I followed Font Awesomeas I figure Dave knows his shit (also check out blacktie https://www.kickstarter.com/projects/232193852/font-awesome-...)

However, this is not as performant. Font Awesome switched away from this to an extra `fa` class for that reason.