Board Thread:Wikia Discussion/@comment-25683568-20150318062713/@comment-26154973-20150609114220

And I don't see any reason not to override it :) The reason would be the name of Japanese font that is desirable or strictly preferred on Windows for this particular site and is not Meiryo (setting Meiryo in font-family wouldn't affect non-Windows systems or Windows systems without Meiryo anyway).