Using CSS, you can style the browser window scrollbars. But this is a Microsoft extension to CSS, so only Internet Explorer supports it. Still, it's easy to do, and since most of your visitors probably use Internet Explorer, you might want to do it anyway. It can really look great.

A common need in Web design is a centered layout. But many people have problems coding it using CSS. In past years, centering a page was done with the <center> element. The current method to center a page is using CSS, but due to browser incompatibilities, it's a little tricky.

Using modular stylesheets is the next step in creating modular and reuseable styles. The World Wide Web Consortium (W3C) decided to modularize the CSS3 spec, because modularization makes sense. You can use modularization concepts on your Web site to organize your CSS code and reduce bugs.

Using CSS, there are many built-in cursor styles you use, from the waiting hour glass to directional pointers. Also, in Internet Explorer 6, you can use custom cursors by uploading custom cursor files (.cur) to your Web site and then referencing them via CSS. Also, you probably have hundreds of cursors on your computer you could upload and use. Just remember Google's motto, "Don't Be Evil." Custom cursors can be extremely annoying to users, no matter how fun they might seem. Used appropriately, though, CSS cursors can add a lot of usability to the user experience.