Or Chrome. I had no idea it could scroll at all and closed the tab before seeing these comments.

Update: even weirder, it does scroll somewhat, but gets stuck and won't respond to two-finger scrolling. All in all a terrible idea for navigation.

Why not just use the links on the left?

Misses some animation but still gives you all the info.

For starters, the links on the left never show that there are two screens (even with scrolling that is harder to see than in should be). Why not just make a site that works?