34. Useful References

Start with the standard, but remember that no browser implements the standard perfectly.

• CSS 2.1 Specification: http://www.w3.org/TR/CSS21/

Be careful when following instructions or code you find on the web — many are written for a particular browser. The following sites are full of useful information that has been well researched and tested across many browsers (although some of it has not yet been updated for IE 7).

• A List Apart: http://alistapart.com/
  includes many articles on how to portably produce sophisticated CSS effects
• Web Devout: http://www.webdevout.net/
  includes an exhaustive table of CSS features supported by various browsers
• Position Is Everything
• WebReference.com