getmdl.io page truncated/clipped when viewport is narrow

Hey, y'all, I'm guessing you're already familiar with this, but when reading the getmdl.io site on a tablet (Nexus 7 2013), the bottoms of at least some of the pages are clipped and can't be scrolled into view. I'm not that familiar with this stuff, but in choosing what technology to use for a web app, if I want it to work on mobile, this makes me worry what else would go wrong if I chose MDL.

You can simulate this with a narrow browser window on desktop, in case you want reproducibility. :)