This is super minor and not really that important but something I noticed in IDEA. It looks like the “PRE, TT” style has a very slightly incorrect default generic font-family value. It should be “monospace” but it’'s “monospaced”. You can find it with this search:
http://www.jivesoftware.org/fisheye/search/svn-org/?searchAllDirs=true&contents= monospaced
Here’'s the W3C page about the generic font families:
http://www.w3.org/TR/REC-CSS2/fonts.html#generic-font-families