CSS and Documents by Eric A. Meyer

Cascading Style Sheets (CSS) is a powerful tool that transforms the presentation of a document or a collection of documents, and it’s spread to nearly every corner of the Web—as well as many non-web environments. In this free introduction to Cascade Style Sheets, you’ll learn how CSS makes it possible for you to completely change the way document elements are presented by a user agent. You’ll discover the origins of this specification and how CSS styles work with HTML. CSS and Documents is an excerpt from the forthcoming 4th edition of CSS: The Definitive Guide.