If you use Compass to manage all of your CSS stuff it _is_ all modules and plugins. Write your CSS using SCSS or SASS. A large variety of really good quality premade mixins, frameworks and snippets are available, and the rest you can build yourself and create reusable libraries of code. Solve a CSS problem _once_. It's a joy to work with and makes CSS fun again. I get really grumpy when I have to handcode CSS now, it seems rather quaint and primitive.