I had trouble moving around at first too, but after maximizing my FF window I was able to see a navigation/teleport panel that had been hidden off the right side of the screen. It should have a couple of buttons with points of interest to jump to.
it has this stuff defined under classes pretty well
Just put a "Best Viewed in Chrome" animated gif at the bottom to cover your butt!
Cool site though, very fun example of what can be accomplished in a browser.
yeah, OP is going to have to learn these CSS media queries (or use a framework with everything already defined) like they said.