Possible Duplicate:
How to clean up styles in a large web site?
Is there any kind of parsing tool, which can scan my *.css file across all pages of my web application and organize its content ? By organizing I mean throw out redundant inputs, unify selectors which duplicate each other's behavior, and so on.
Im not sure of a program that will go through all your files. but this one will do it one at a time
http://www.cleancss.com/ and http://www.lonniebest.com/FormatCSS/