CSS

CSS (Cascading Style Sheets)

A style sheet language used to control the physical layout of web documents separately from their logical structure marked up by HTML/XHTML
General info about CSS
CSS2 (W3C recommendation)
CSS2.1 (W3C candidate recommendation)
CSS Print Profile (W3C working draft)
CSS3 Introduction (W3C working draft)
CSS3 Namespaces (W3C working draft)
CSS3 Advanced Layout (W3C working draft)
CSS3 Backgrounds (W3C working draft)
CSS3 Basic User Interface (W3C working draft)
CSS3 Border (W3C working draft)
CSS3 Box Model (W3C working draft)
CSS3 Cascading and Inheritance (W3C working draft)
CSS3 Color (W3C candidate recommendation)
CSS3 Fonts (W3C working draft)
CSS3 Generated and Replaced Content (W3C working draft)
CSS3 Hyperlink Presentation (W3C working draft)
CSS3 Line (W3C working draft)
CSS3 Lists (W3C working draft)
CSS3 Multi-Column Layout (W3C working draft)
CSS3 Paged Media (W3C working draft)
CSS3 Generated Content for Paged Media (W3C working draft)
CSS3 Presentation Levels (W3C working draft)
CSS3 Ruby (W3C candidate recommendation)
CSS3 Selectors (W3C working draft)
CSS3 Speech (W3C working draft)
CSS3 Syntax (W3C working draft)
CSS3 Text Effects (W3C working draft)
CSS3 Values and Units (W3C working draft)
CSS3 Web Fonts (W3C working draft)