here is my list for top css support resources:
[if it aint at one of these sites...it aint]
great site for learning to write css ---
w3schools css reference and tutorials
excellent reference and specification site ---
w3c css home page
a nice handy css1 reference ---
a list of list-making css styles ---
a css level 2 [css2] specification page ---
css2 reference page
css compatibility table ---
css2 support for browsers
by the way...
css is short for cascading style sheets.
it is a structuring mechanism for adding and defining style such as fonts, colors, spacing, layout to web documents.