Add category slug in css class

Any idea how to add category slug in css class in gk nsp? Somewhore close to: gk-nsp-header?

Hello,

Do you want to add css class depends on the category in News Show Pro widget, right? Unfortunately it's not possible without editing nsp plugin code.

Problem SOLVED

I edit some code in layout-part.php in data_source/wp/ and add class="'.$cat->name.'"