A couple beautifully designed resources. The first is the original button design and PSD file produced by Marian Mraz:
The second resource is a pure HTML/CSS3 implementation of Marian‘s design as a rebound on Dribbble produced by Max. You can find this on GitHub:
I thought this was a great freebie as there are two great versions for you to choose from! Enjoy!
Leave me a comment if you like either of these implementations or if you found this useful.