No. Sorry for the confusion...I should have explained myself better.
In the INDEX.PHP file, you will see some DIVs with IDs like "rap" and such. Not all of the DIVs and things in the INDEX.PHP file are carried over in the WP-LAYOUT.CSS file. This was simply an arbitrary choice by the default template designer. The page I did attempted to identify everything in the INDEX.PHP file that had been defined and as such, could be styled using those pre-defined classes or IDs. This does not mean that you can't make up your own, or, indeed, delete, change, or modify the existing selectors. My intent was to give those who are new to CSS a way of tying some of the CSS to the items in the INDEX.PHP that were or could be styled.
Hmmm. I hope that makes sense. Let me know if further clarification is necessary.