Jumbatron Image Responsive to Android and ios devices

Hi there,

I have been through many threads in the support forum trying to find a solution to my problem, without much luck! I think I’ve tried every code possible.

My Jumbatron image looks great on desktop but as soon as you view it on a mobile device you can only see probably a third of the image.

Could someone please possibly help me with fixing this?

My site is www.herformance.com.au and I have also attached screenshots.