Over on Tutorial Blog, I shared my "Toolbox CSS" that I like to use:
What is Toolbox CSS?
Toolbox CSS is styling information that has nothing uniquely to do with any particular website. These are a collection of common styles that can be useful on any web project. How many times have you written a class for clearing a float? Too many, is my guess. The idea with Toolbox CSS is to include a separate stylesheet for these "utility" styles.