This site shows you how to force the footer of a webpage to stick to the bottom of the viewport. This is a pretty advanced CSS method and requires that you know a bit about how CSS works.
Tool for generating rounded corners in web design using only semantic (x)HTML and CSS with no JavaScript. Tool generates background graphics, CSS and HTML sample with user input for customization.
A tutorial on web design and layout of web pages with different numbers of columns. Provides CSS for web pages containing 2 columns (both left and right flanked) and a 3 column layout.
The Simple CSS Image Switcher is quite simply that. Showcasing the power of CSS and Dean Edward's IE7 JavaScript, mouse rollovers can control images shown.
An article on basic CSS layouts from UK-based website Content with Style, a site that aims to catalog manuals, tutorials, and code snippets to assist professional web designers.
The service not only allows to experiment with fonts and text styles with graphical examples of application of chosen parameters, but also generates CSS and HTML source code for whatever setup you decide on.
This site offers a tutorial discribing how to use Css to control and style numerous web pages at the same time. Complete references for Css2 are also included. A quiz allowing the user to test his comprehension is offered as a bonus.
Set of HTML and CSS templates available for others to use to create content on the web. Several different styles are available to be added at a later time.
Create cross-browser list-based navigation bars with ease. User may specify navigation bar positioning, fonts / styles, differentiated by whether visited.
Ruby on rails is Geoffrey Grosenback's blog covering Ruby, Ruby on Rails and graphic design. The site features a Ruby on Rails helper for making simple graphs using CSS/HTML.
SmoothGallery is designed from the ground up to be standard compliant: You can feed it from any document, using custom css selectors. Also, it's very lightweight: The javascript file is only 16kb.
Jonathan Snook created a site that talks about things he is interested in, HIs site contains problems he has run into and articles he likes. This is basically a personal resourse for him.
The website describes the css tinderbox - an effort to support open source web design by providing very basic, yet solid, CSS/XHTML design templates that web designers and web developers can use as the foundation for their own projects.
The website also provides several links to websites built on CSS Tinderbox templates.
A List Apart Magazine (ISSN: 1534-0295) explores the design, development, and meaning of web content, with a special focus on web standards and best practices
This site provides details Cascading Style Sheets, level 2 (CSS2). CSS2 is a style sheet language that allows authors and users to attach style (e.g., fonts, spacing, and aural cues) to structured documents (e.g., HTML documents and XML applications). By separating the presentation style of documents from the content of documents, CSS2 simplifies Web authoring and site maintenance. This specification also supports content positioning, downloadable fonts, table layout, features for internationalization, automatic counters and numbering, and some properties related to user interface.
I often see people posting on CSS discussion lists to ask how to centre a div. It's actually very simple, although you need to use a few hacks for unruly browsers.