Appendix A. Resources

This appendix contains some of the top references, discussion groups, and tools on the Internet and is provided to help you when working with CSS.

When working with CSS, keep these two tips in mind: simplify and verify. Simplify by using only the selectors and properties you believe you need; any extras could cause some confusion down the road. Then verify the (X)HTML and CSS with the help of validators (two good validators are listed under Recipe A.3 in this appendix).

Those two steps solve most problems developers encounter when working with CSS. However, if you still run into trouble, don't hesitate to ask for help from the web development communities listed in Recipe A.1 of this appendix.