via css-tricks.com
dabblet is an interactive playground for quickly testing snippets of CSS and HTML code. It uses -prefix-free, so that you won't have to add any prefixes in your CSS code. You can save your work in Github gists, embed it in other websites and share it with others. Follow @dabblet on twitter
via dabblet.com
via vanseodesign.com
The Shapes of CSS
All of the below use only a single HTML element. Any kind of CSS goes, as long as it's supported in at least one browser.
Square
Rectangle
Circle
Oval
Triangle Up
Triangle Down
Triangle Left
Triangle Right
Triangle Top Left
Triangle Top Right
Triangle Bottom Left
Triangle Bottom Right
Parallelogram
Trapezoid
Star (6-points)
Star (5-points) via Kit MacAllister
Pentagon
Hexagon
Octagon
Heart via Nicolas Gallagher
Infinity via Nicolas Gallagher
via css-tricks.com
