I am hearing so much talk about AJAX these days that the simple coding tools such as CSS often get overlooked. Check out these cool CSS graphs. You can also use CSS to enhance your AJAX apps using CSS to manage behaviours, check the demo here.

For anyone new to the power of CSS, checkout the basics regarding selectors, or read thse CSS tips and tricks.

Eg.

1. Rounded Corners
2. Rounded Corners without images
3. Creating a Netflix style star ratings
4. Tableless forms
5. Styling Lists with CSS
6. 2 Column Layout Technique
7. 3 Column Layout with CSS
8. 3 Column Fixed width centered layout
9. Printing with CSS
10. Adding a CSS stylesheet to an RSS feed
11. Footer Stick
12. CSS Element Hover Effect
13. Styling Horizontal Rules
14. Clearing Floats
15. CSS Popups
16. Box Punch
17. CSS Badge
18. Orange RSS Buttons with pure CSS
19. 10 CSS Tricks you may not know
20. 10 More CSS Tricks you may not know