Refactor stylesheets

Unless I'm reading this wrong, and I very well could be, this about halves the size on the wire for the css and render time. There could be other other differences between alpha and beta that account for some of that, though.
Is this comment still something you think you can accomplish? This is the only way I could determine to have a full-bleed background in the hero and still have the content in the hero sized and positioned correctly.