[Theme:Virtue] Shortcode Icon

Hello!

I was wondering how to change the padding around the shortcode icons of the Virtue free theme. It is set at 10px, from what I can see with Firebug, but can’t figure out what is the way to modify this property. I’ve tried .icon-camera-retro {padding: 4px 10px 0px 0px;} without success. All I can think of is my class must be wrong… Any help would be greatly appreciated.