Here is the Best XHTML and CSS Style Guide

Thinking of updating your website from HTML with all of its sordid tables and font tags to sleek, clean XHTML and CSS?  Or maybe you keep hearing about XHTML and CSS but don't really know what they are and why they are important?  After all, you've been doing fine with HTML for years maybe!

There are many benefits to XHTML and CSS.  The biggest benefit from a Web developer's perspective is that it makes it much easier to maintain and update sites.  Ideally, XHTML defines the structure of the page and CSS defines the appearance.  The better that separation can be achieved, the easier updates are.  In a good design, the entire appearance of your web site can be changed just by editing one CSS stylesheet!  See our CSS Zen Garden article for info on a very interesting contest where web designers had to do just that!

The New York Public Library's Style Guide is often cited as the best style guide for XHTML and CSS.  The Style Guide explains the library's XHTML markup and CSS design requirements as well as Web design standards and best practices.  It also discusses accessibility requirements to comply with U.S. accessibility laws and make your website’s content available to the widest possible number of people, browsers, and Internet devices.

Some of the topics discussed include:

  • XHTML Guidelines
  • XHTML compared to HTML, and how to make an easy transition
  • What is XML?
  • The foundation of XHTML
  • XHTML Benefits
  • Four key benefits of converting from HTML to XHTML
  • XHTML Authoring Tips & Tools
  • How to simplify the work process
  • XHTML Accessibility Tips
  • XHTML Validation
  • Why Web standards are important
  • CSS Style Sheets
  • CSS Guidelines
  • Tips on authoring and linking to Style Sheets
  • Example CSS Style Sheets!
  • CSS Validation

It's a good resource.  Visit the New York Public Library's XHTML and CSS Style Guide to learn more about XHTML and CSS...