Footer Background Runs Entire Site Error

Hi Again.

One last issue to fix after updating Shopper Press standard theme to the latest version.. phewww 🙂 Oddly the background of the footer area stretches right across the screen on all pages except the home page. eg https://automotivecarparts.com.au/category/buy-cheap-auto-air-conditioning-car-parts-online/ This is happening in Firefox, IE and Google Chrome.

On the wp-admin page it simply breaks, this may be a firefox issue as seems fine in IE and Google Chrome.

Advice and help how to fix will be greatly appreciated as it looks really untidy the way it is, but more so very odd to be happening.

Thank you kindly
Jules