GitHub Style Guide

The backstory is I followed the link in the comments after looking at the source on one of Github's 404 pages (https://github.com/asdfasdfasdfhjagksdfhjkgasdjhfgkajhsgdfhj...). The comment read:

  Hello future GitHubber! I bet you're here to remove those nasty inline styles,
  DRY up these templates and make 'em nice and re-usable, right?

  Please, don't. https://github.com/styleguide/templates/2.0