Styling issues on firefox 50.1.0 on linux

[jrkirby]

The default browser for linux mint is currently firefox 50.1.0. The text and graphics extend all the way from one side of the screen to the other with no border. There are also large vertical gaps between some sections.

[ludwigschubert]

@jrkirby thanks for letting us know!

While I can't promise a quick fix, we will include better fallback styles for browsers that we can't polyfill. That being said, I don't immediately see why Firefox 50 wouldn't be polyfilled correctly, so this warrants a deeper look.