CSS3 is the latest standard for CSS.
CSS3 is completely backwards-compatible with earlier versions of CSS.
CSS3 is a latest standard of css earlier versions!
CSS3 has been split into "modules". CSS3 is collaboration of CSS2 specifications and new specifications, we can called this collaboration is moduld.
Some of the most important CSS3 modules are:
- Box Model
- Backgrounds and Borders
- Image Values and Replaced Content
- Text Effects
- 2D/3D Transformations
- Multiple Column Layout
- User Interface
Most of the new CSS3 properties are implemented in modern browsers.