Hello, xenForo community! I have an idea for something I would like to do with my style, but I don't know how to pull it off. Check out the attached image. As you can see I'd like to add rounded corners to my sidebar, but I've tried searching and editing the CSS of the sidebar but all I've managed to do is create round corners for all of the sidebar, and not the way it looks in the mockup image (rounded corner for each individual box). Does anyone know how to pull this off?