Module Class

I am looking to change the title class for a module.
I am currently using uk-text-center - I would like to modify this to include a centered image below the title text.
Is there a ready made class for this?
If not, where would I find this module class to end?

Thanks,
Alec

Hello,
1.) Live Url
2.) the class center all elements include the image. Maybe our image has an inline css like align-left. Please check the sourcce code of the module