There's some irony in that the link goes to an almost-blank page because the custom fonts (Fira Sans here) have point-blank refused to load. It's not a popular

There's some irony in that the link goes to an almost-blank page because the custom fonts (Fira Sans here) have point-blank refused to load. It's not a popular viewpoint anymore but if you really want to optimise your site, using stock fonts when you can is a good first step. (And yes, I've tried reloading. Firefox-stable on Ubuntu. Works in Chrome.)