Colors y gradients en CSS3

• CSS Color Module Level 3
• CSS Backgrounds and Borders Module Level 3
• Selectors Level 3
• Media Queries

Otros recursos

• Diseño web adaptable (responsive web design)
  • css3.com A comprehensive CSS 3 reference guide, tutorial, and blog
  • Responsive Web Design
  • Return of the Mobile Stylesheet
  • How To Use CSS3 Pseudo-Classes
  • CSS3 structural pseudo-class selector tester
  • CSS: Innovative Techniques and Practical Solutions (backgrounds)
• A List Apart
• Smashing Magazine