mattgraham/Midnight — pull request #1 by martine (2012-04-20 17:49:26+00:00)
Title: Add 'monospace' to the <code> font fallback list

blocks were coming out in a serif font on Linux.

Here's a picture of what the github page looks like on my Linux machines.
http://i.imgur.com/WYhCp.png
You can't rely on any particular font to exist on Linux, so it's best to leave in a generic CSS name as a last fallback.