CSS is a kind of code that allows excessories to HTML. Think of it like this: The website is a house. The HTML is the framework, I.E. Text and layout. CSS is more like the windows, doors, paint, and furniture etc., I.E. Colors, Text Colors, Link styles, and other thingys. On this page, I have two stylesheets, Id's, classes, and others. Cool!
Click here to see my CSS page, and Yes, it does have an alternate stylesheet, I have no Idea why you can't view it. Dang.
My CSS page is not quite as imressive as the HTML page... UNTIL you look at thhe external stylesheet CSS code!