Back ground image on Image Show GK4

How do I change the background image (man running) on Image Show GK4 (module style gk-startup)

Hi

It's not a part of slider, but a template background under header area. You can change it by adding this code to override.css with a path to Your new image.

Code: Select all

#gkHeader.nobg {
    background: transparent url("/joomla25/startup/templates/gk_startup/images/header_bg.jpg") no-repeat scroll center top;
}