I have an issue where I created some artwork that has a dark background that matches the dark background color of my site. There looks to be a 1px white rectangular outline around the image showing where the photo stops and the site background begins. This ruins the look I was trying to achieve of having the artwork look part of the site and not a rectangular photo place into it. I double checked and the image is fine - only when placed on the site does this outline appear. Is there a way to remove or hide this outline?