How to add image background to btn-default twitter-bootstrap button?

Question

I try to design a bootstrap v3.3.5 button by using the existing class btn-default, below are the sample of codes of what I had done.

Answer 1

Have you tried using a icon font like http://fortawesome.github.io/Font-Awesome/

Bootstrap comes with their own library, but it doesn't have as many icons as Font Awesome.

http://getbootstrap.com/components/#glyphicons