I am having some problems customising the default Xenforo style. Instead of a block colour, I want to have a custom background image. I have edited Style Properties -> General -> HTML -> Background and this works well for registered users. But for moderators there is a 25px gap between the background image and the moderation bar (see attached with #ff00ff colour to emphasise the issue). I should add that instead of a solid header colour I have made this transparent so I need the background image to start at the very top of the page. Any thoughts?