The Index Dot Html and Css sites are references for technical information about the HTML and CSS languages. This site provides links to many CSS resources. Check this site's resource collection, links to books, mailing lists, online classes and more. This organization offers articles covering Cascading Style Sheet topics.
General discussion is available via a newsgroup or mailing list.
This site features links to books, tutorials, authoring tools, browsers and more resources. This site provides a tutorial, covers CSS structures and rules, properties and more. Also included are links to more CSS references including frequently asked questions, articles and bug workarounds. This tutorial covers the CSS box model with a focus on border properties and their implementation. Many Users Hold Back on.