The anatomy of a rule set and the three types of style sheets

We're now a little more familiar with the content of the book and the website we're going to build. Before we start delving into more advanced topics, let's review a few CSS foundations. Going forward in this book, I'll use terms such as selector, property, and value, and you'll need to understand exactly what these terms mean in order to follow along. Here's what we'll do: we'll review a rule set first, and then we'll look at the three different places we can write those rule sets. So let's get started.