Examples

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.
http://www.456bereastreet.com/lab/

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.
http://www.bluerobot.com/

Boxed CSS
CSS website gallery, features several free CSS layouts available for viewing and download
http://www.boxedcss.com

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

CSS Beauty
Design showcase with examples and website reviews.
http://www.cssbeauty.com

CSS Drive
Gallery organized into categories, such as two column, three columns, and business. Includes code examples.
http://www.cssdrive.com/

CSS Elite
Showcase site featuring category based gallery, resources, and news.
http://www.csselite.com

CSS Examples Index
A basic look at font type, color and spacing control, using tables with style sheets, float property, and positing.
http://www.macloo.com/examples/css/index.htm

CSS Portal
Features coding property charts, template examples, visual examples of menus, and online tools for generating code. Also includes recommended software and books.
http://www.cssportal.com

CSS Princess
Features a categorized gallery of tableless website designs made by females. Users can rate and comment on the designs.
http://cssprincess.com/

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

CSS Zen Garden
Collaborative on-line gallery demonstrating what can be accomplished in visual design by using cascading style sheets.
http://www.csszengarden.com/

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.
http://www.designshack.co.uk

The Designed Tree
A gallery featuring website examples of great design using CSS and other style sheet languages.
http://www.thedesignedtree.com

Free CSS Templates
Preview over 200 standards compliant CSS templates. Designs can be downloaded freely under Creative Commons license.
http://csstemplatesforfree.com

Light on Dark
Showcase site featuring dark background layouts with light colored type. Places an emphasis on well designed and semantically coded websites.
http://www.lightondark.com

New York Public Library Style Guide
Offers guidelines and downloadable style sheets.
http://www.nypl.org/styleguide/css/

NoZen
Design layouts using style sheets and details on submitting a layout.
http://www.nozen.com/

Strictly CSS
Design examples that conform to the web standards and good design practices, with tools, articles and layouts.
http://www.strictlycss.com/

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

W3C Core Styles
Ongoing project exploring shared style sheets over the Web. Includes several layout designs and details on implementation.
http://www.w3.org/StyleSheets/Core/