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.