Apologies but I'm a noob.
I've been editing a theme called "Sofa Suppastore" but have run into a slight issue with the background. I've customised the background through WordPress' CMS (not using CSS) which has worked in most instances, however, when I get to a page with a lot of content the background seems to lose it's structure.
Working background reference:
Broken background reference:
I've tried sourcing answers from the forum and Sofa Suppastore's support but haven't had any luck. Any assistance would be appreciated.