Ten CSS tips designers should know or learn

1. Alternative stylesheets

A page can be given one default stylesheet and any number of alternate style sheets for the user to choose from.
The way you can switch between them depends on the browser; most browser have this option under View -> Page Style or something similar. Some browsers unfortunatly don’t offer a menu for changing the page style yet.
To include extra stylesheets, you just have to add more <link> elements in the header, with the right rel and title attributes.