Introduction to Cascading Style Sheets (CSS)
An easy, concise introduction to CSS, including basic style elements, fonts, margins, borders, backgrounds, colors, and whitespace.

Effective Use of CSS
Centralized style information and implementation advice from Jakob Nielsen, the well-regarded usability expert.

Give Me Pixels or Give Me Death
Good advice on how to specify font sizes in your style sheets. Also details many of the potential problems with other font sizing methods.

Top 10 CSS Authoring Tips
Important tips on using style sheets from Eric Meyer, author of several well-regarded publications on CSS.

Rich In Style (Table on CSS support in various browsers)
Table showing various levels of support (and potential problems and glitches) for style sheet elements in different web browsers.

House of Style
A comprehensive selection of guides, tutorials, articles, books, and links for web developers working with style sheets.

CSS/Edge
Challenging, exploratory, and experimental uses of style sheets, all using valid CSS code.

CSShark
Answers to frequently asked questions regarding style sheets, including basics, positioning with CSS (table-free page layout), and problems specific to Netscape 4.