What's Next?
You should now have a good understanding of why you should validate your CSS style sheets and HTML (or XHTML) documents. You should also now know how to use the online CSS and HTML validators that are available from the W3C and the WDG, as well as know where to find other validation and page checker utilities.
In Chapter 16, “Providing for Backward Compatibility,” you learn how to ensure that your CSS-powered HTML files don't produce adverse results when displayed in Web browsers that lack support, or provide imperfect support, for CSS.
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