[joshmlewis]

Ha, I don't know if it's ok to rip people's CSS file and then "attribute" it unless they specifically say that's ok it's still copyrighted.

[andymcsherry]

Reddit publishes it on github, the license is here: https://github.com/reddit/reddit/blob/master/LICENSE

[atko]

Reddit CPAL license (Common Public Attribution License Version 1.0 (CPAL)) states so.