I am running a localhost of WP right now and I have installed hatch by griden. I have put in a custom image as my "logo" it has a black background and I have changed my theme background to black #00000 now I see a grey thin border around the outside of the image, I have changed nothing in the CSS before this and Can't seem to figure out what is causing the border.
I am also running, locally, oxygen by griden, and have the same issue with primary posts.
It only happens with images that have black all the way around the edge, if an image is half on e color and and half another this doesn't happen. Am I missing something in the CSS? How do I go about solving this?