The document discusses CSS3 and its advantages over other technologies for creating modern websites. Some key points include:
- CSS3 allows separation of content, presentation and interaction layers for better structure and control.
- It provides consistency across devices and browsers, better bandwidth management, and easier content updates.
- CSS3 introduces new selectors, box model changes, animations/transitions, gradients, shadows and more.
- Features are added over time in layers and browser support continues to improve for new CSS3 features.