4.5 Further reading

The W3C CSS Level 1 Specification: http://www.w3.org/TR/CSS1
The formal and official definition of CSS (level 1). Quite technical.
Adding a Touch of Style: by Dave Raggett
http://www.w3.org/MarkUp/Guide/Style.html
An introductory tutorial to CSS by one of the original designers of HTML.
The Web Design Group's CSS web site: http://htmlhelp.com/reference/css/
A more friendly, user-oriented description of CSS.
The w3schools CSS Tutorial: http://www.w3schools.com/css/
A tutorial-based introduction to CSS.
The W3C CSS Validation Service: http://jigsaw.w3.org/css-validator/
A syntax checker for CSS code.
CSS Zen Garden: http://www.csszengarden.com/
A web site that demonstrates and evangelizes the flexibility and power of CSS beautifully.

Paul Murrell