
CSS is designed primarily to enable the separation of document content (written in HTML or a similar markup language) from document presentation (written in CSS). This separation can improve content accessibility, provide more flexibility and control in the specification of presentational characteristics, and reduce complexity and repetition in the structural content.
We have put together a list of resources that you may find useful.
CSS Zen Garden - A showcase highlighting the power of CSS. CSS Zen Garden uses a single HTML file that cannot be edited and it is only the CSS that changes between the designs.
Holy CSS Zeldman! - A very useful CSS resource. The highlighted links are considered the essentials of CSS.
W3C CSS Validation - Validate your pages CSS to see if they have errors.
A List Apart - An online magazine that covers everything web related. An essential read.
Molly E. Holzschlag - Molly is a well-known Web standards advocate, instructor, and author. She is Group Lead for the Web Standards Project (WaSP) and an invited expert to the HTML and GEO working groups at the World Wide Web Consortium (W3C).