Do not underestimate the power of the Dark Side, here is an illustration of why blogs can sometimes work better than you could ever imagine.
A week or so back I posted CSS From The Ground Up it had a couple of links to some CSS resources, one of which was design Principles who had a small article about CSS Specificity which I think is also called precedence (could be wrong there). Anyway the link at the CSS: Specificity Wars | And all that Malarkey is the best solution for getting your head around which CSS tag will pop out first, especially if you are a Star Wars fan.
Truly glorious, and if you aren’t a Star Wars fan, try the Molly link. It’s a tad saner.