CSS Help Pile » Thread.

Grouping and organizing CSS isn't exactly straight forward when you are dealing with large CSS files. There are best practices, sure, but for the most part you're free to be inefficient and still have a valid style sheet. Luckily there are great little write-ups like CSS Organization Tip 1: Flags that suggest some tips to help avoid avoid messy style sheets. Keep your eyes peeled for next tip, too; it will deal with how to break out sections effectively.