SharePoint and CSS
Heather Soloman writes about a several important and helpful points in this article on using SharePonint and CSS.
"SharePoint utilizes CSS quite heavily, and it is both a curse and a blessing. Since nearly all of the SharePoint 2003 UI is hard coded in the site definitions, CSS provides one of the best ways to update the UI. But the SharePoint CSS is also pretty unruly and can be quite daunting at first glance. Let's go ahead and get the numbers out on the table.
For a SharePoint 2003 Portal and WSS install, there are 7 separate style sheets

