Following is a list of resources to learn more about Cascading Style Sheets and web development.
The W3C, World Wide Web Consotium, is the chief organization for setting standards for the World Wide Web, the Internet. This organization compiles recommendations for standards to be used in creating web pages for the internet.
To view the specific standards for the recommendations for Cascading Style Sheets, CSS, you can visit their pages.
http://www.w3.org/Style/CSS/Overview.en.html W3C Cascading Style Sheets Home Page
http://www.w3.org/TR/CSS2 W3C CSS2 standards
http://www.w3.org/TR/CSS2/propidx.html W3C Appendix F: Full Property Table
Mozilla Developer Network
The above link takes you to the Mozilla Developer Network pages on CSS.