Possibly off-topic, but the article isn't displaying[0] for me on Chromium 55.0.2883.87 (64-bit), running on Arch Linux, unless I go in the dev tools and manually remove "Fira Sans" from the font-family list in .container[1]. Not sure whether the problem is with me or the site, I'm surprised it doesn't fall-back to sans-serif before I override manually.
[0] http://i.imgur.com/qJKSvMC.png [1] http://i.imgur.com/zYDZrtr.png