Using the WDG's CSS and HTML Validators
The Web Design Group (WDG) hosts online CSS and HTML validators that you can use to validate your CSS style sheets and HTML files.
Using the WDG CSSCheck Validator
The WDG has another online validator, CSSCheck, that you can use to validate your CSS style sheets. You can find the WDG CSSCheck program at http://www.htmlhelp.com/tools/csscheck/ (see Figure 15.10).
Figure 15.10. You can also use the WDG CSSCheck online validator to check your CSS style sheet.
To use the WDG CSSCheck program, you need to either specify a link to a CSS style sheet file (with a .css extension) or paste your style sheet's codes ...