CSS Reference

http://www.w3.org/Style/CSS/ - W3C Cascading Style Sheets (CSS) Home Page
http://www.w3.org/TR/1999/REC-CSS1-19990111 - W3C Cascading Style Sheets, level 1, CSS1 Specification
http://www.w3.org/TR/REC-CSS2/ - W3C Cascading Style Sheets, level 2, CSS2 Specification
http://www.w3schools.com/css/default.asp - CSS Tutorial
http://www.w3.org/TR/REC-CSS2/propidx.html - CSS2 Property index
http://www.webreview.com/style/css1/charts/mastergrid.shtml - CSS1 Selectors Support Chart
http://www.webreview.com/style/css2/charts/selectors.shtml - CSS2 Selectors Support Chart