I'm trying to add standard sized MPU adverts (300x250px) into the sidebar using the ads section (under Appearance).
The problem is the sidebar isn't wide enough, so I found the style for the sidebar (#main > div > div > .sidebar) and set it to 310px, however it cuts off the right-hand side of the advert. So I made the sidebar wider again, but have the same problem.
I then looked for some padding or margin that might be making a difference, so I set ".wcfAdLocationSidebarTop, .wcfAdLocationSidebarBottom" to have 0 left/right padding (it was 14px). This now displays the full width of the advert, but it looks wrong because there's no left margin, and it really needs it.
I've tried a few other style settings but just can't get it to display correctly. Does anyone have any suggestions??