456 Berea Street - The CSS and XHTML Lab - A collection of practical CSS and XHTML experiments, methods, tips and tricks. Many of the examples include step-by-step instructions.

BlueRobot.com - Two and three column layouts, tutorials on auto-width and negative width margins, and a fix for the @import rule and how Internet Explorer phrases the rule.

Boxed CSS - CSS website gallery, features several free CSS layouts available for viewing and download

Code Snippets - Offers over 100 free fixed width and faux column CSS layouts. Site also features code snippets including Javascript, PHP, HTML and CSS.

CSS Beauty - Design showcase with examples and website reviews.

CSS Count - Design showcase with website screenshots and reviews.

CSS Drive - Gallery organized into categories, such as two column, three columns, and business. Includes code examples.

CSS Elite - Showcase site featuring category based gallery, resources, and news.

CSS Examples Index - A basic look at font type, color and spacing control, using tables with style sheets, float property, and positing.

CSS Portal - Features coding property charts, template examples, visual examples of menus, and online tools for generating code. Also includes recommended software and books.

CSS Princess - Features a categorized gallery of tableless website designs made by females. Users can rate and comment on the designs.

CSS Vault - A repository of creative CSS websites. Resources section includes: Articles, Demos, Layouts, Tutorials, and various other related topics.

CSS Zen Garden - Collaborative on-line gallery demonstrating what can be accomplished in visual design by using cascading style sheets.

Design Shack - Selective CSS and Web 2.0 design gallery. Gallery is sortable by category or color. Features regularly updated news and a substantial amount of tutorials, which include actual code.

The Designed Tree - A gallery featuring website examples of great design using CSS and other style sheet languages.

Free CSS Templates - Preview over 200 standards compliant CSS templates. Designs can be downloaded freely under Creative Commons license.

Light on Dark - Showcase site featuring dark background layouts with light colored type. Places an emphasis on well designed and semantically coded websites.

New York Public Library Style Guide - Offers guidelines and downloadable style sheets.

NoZen - Design layouts using style sheets and details on submitting a layout.

TanTek: CSS Examples - Reconstruction of artwork and layouts of non-media material into a Web media layout using style sheets.

W3C Core Styles - Ongoing project exploring shared style sheets over the Web. Includes several layout designs and details on implementation.