I basically rewrote this entire set so they are full vector buttons, meaning:

• @font-face icons
• custom font file for all social icons
• icon font use private unicode spaces for accessibility
• em sizing based on button font-size
• support for about 83 different services
• buttons and icons supported
• no raster images (sweet)
• works splendidly on any browser supporting @font-face
• CSS3 degrades gracefully in IE8 and below etc.
• also includes generic icon-less primary and secondary buttons

Demo

<button class="zocial facebook">Button label here</button>

or

<a class="zocial twitter">Button label</a>

• Can be any element e.g. a, div, button etc.
• Add class of .zocial
• Add class for name of service e.g. .dropbox, .twitter, .github
• Done :-)

Check out zocial.smcllns.com for code examples.

There's also a LESS version from @gustavohenke here

Problems, questions or requests to @smcllns

This project is available on CDNJS: https://cdnjs.com/libraries/css-social-buttons

1. Install Font Custom
2. Add new font in the src/ folder.
3. Set color settings in the templates/zocial.css file.
4. Run fontcustom compile
5. Update the sample.html file with both the button and icon.
6. Test rendering. If broken go to step 2.
7. Send pull-request !

Under MIT License