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CSS (which stands for "cascading style sheets") is a language you can use to create the look of your Web pages. While HTML can be used to set the language for multiple aspects of your website, CSS is used specifically to control the visual design aspects of elements on your site.

CSS can be used to set the style parameters of your entire website. With CSS, you can control the look of your website's:

• font types
• font and element colors
• padding
• margins
• element positioning

The advantage of CSS is that it allows you to set the formatting of your site without affecting the site's underlying structure. By separating the layout and formatting properties of your website from its underlying logical structure, you can make cosmetic changes to your site without running the risk of altering the integrity of your site's data by accident.

There are any number of resources out there for learning CSS. Look into computing courses at your local college or a private computer training company. If you prefer to be self-taught, there are scores of books (a recent Amazon search came up with more than 250) to help you learn both CSS basics and advanced CSS design techniques. And if you're web-savvy, you can find free online tutorials on CSS and how it works. Just type a keyword such as "learning CSS" into your search engine, and off you go!