font: 62.5% Lucida Grande, trebuchet ms, Arial,Helvetica,sans-serif
and there's some sprinkles of Georgia used throughout as well.
And man.. I gotta say, that is about the most tidy css I've seen in a while. If anyone wants to learn a good lesson its there. Having a clean, well notated style sheet will save you SO many headaches in the future when it comes to updating a site or backtracking an issue or reusing a style sheet.. there are just so many reasons.
Very Cool there flashbangboom..
