Take your icon game to the next level. Check out Fonticons, from the maker of Font Awesome.
             

fa-credit-card · Unicode: f09d · Created: v2.0 · Categories: Web Application Icons, Payment Icons

After you get up and running, you can place Font Awesome icons just about anywhere with the <i> tag:

fa-credit-card
<i class="fa fa-credit-card"></i>

Looking for more? Check out the examples.