1. css3 实现的各种常用图形

http://www.jqhtml.com/8045.html

1. Square
2. Rectangle
3. Circle
4. oval
5. Triangle Up
6. Triangle Down
7. Triangle Left
8. Triangle Right
9. Triangle Top Left
10. Triangle Top Right
11. Triangle Bottom Left
12. Triangle Bottom Right
13. Curved Tail Arrow
14. Trapezoid
15. Parallelogram
16. Star (6-points)
17. Star (5-points)
18. Pentagon
19. Hexagon
20. Octagon