Changing Banner Image

superduper

There is something (probably very obvious) that I am missing. I have loaded 4 banner images into my site. I am able to change them in my inspector, but for some reason, all of the pages at the same hierarchal level change simultaneously. I have selected This page "uses its own them style," and tried creating custom styles for each image. What am I missing here? I have encountered this issue before, and figured out a workaround, but I am going batty here. I am using Mellifluous Theme, and have my images named properly and loaded in resources. Thanks in advance