CSS stands for Cascading Style Sheet. It is a style language used to define the colors, fonts, etc. of, elements in an HTML file or in an HTML site. The main concept is that HTML files hold the content and CSS formats that content.

There are three CSS styles in the World Wide Web:
• Inline CSS
• Embeded CSS
• External CSS
In this class, we will learn how to create an embeded CSS for each HTML page, and how to build an external CSS for entire web site.
Please download the demo files here for your reference. Let’s write a two-column CSS layout, and a three-column CSS layout first. After you get a three-column skeleton, add a header at top, then add a footer at bottom.