CSS coding can be a cross browser nightmare and is can generally bite even the most affluent coder. That's why many of us use a base point, though sparingly. SmashingMag again has a nice list of CSS browser frameworks and the like.

SmashingMagazine - CSS Frameworks + CSS Reset: Design From Scratch

"You don’t have to write the same CSS-code or (X)HTML-Markup over and over again. Whatever project you’re starting to work with, at some point you have to define classes and IDs you’ve already defined in your previous web-projects. To avoid unnecessary mistakes you might want to start not from a blank file, but from an almost “perfect” scratch. The latter might contain some basic definitions you’d write in your code anyway. However, once you’ve decided to create such a scratch, you need to make sure it is really bulletproof — besides, if the stylesheet also sets up optimal typographic rules and basic form styling you manage to kill two birds with one stone."