One Rectangle Custom Icon

My client provided custom icons before I decided to use this specific plugin. Most of the custom icons are square, or close enough to square that they work well, but one of them is 327×118.

It displays cut-off. Any attempt (CSS) I’ve made to increase the width of the container or the img results in it getting taller as well. Is there a way I can make this one icon fit this wider aspect?

I don’t mind putting it to the far right, so just making it overflow it’s container would be okay.