Page doesn't render correctly for me in Firefox/MacOS, so I had a similar thought... there's probably a couple of things he should add to his list! :D

Same here (and same browser/OS), it seems like some font is missing?

Its loading here. Try again :-)

I know, I retried before and it worked.

But "it works differently every time I try" wouldn't have made a good CSS joke. Oh, wait.