I've just been checking out the way the forum looks on different devices.

To me it seems that the "black bar" at the top of the page isn't really serving any purpose and is making the forum look a bit weird. Wouldn't it be better to have white continuity around the logo to fill the central module right up to the top of the screen? (As if the central core was a sheet of white paper).

Either that, or keep the back bar but remove the white background from the logo's bitmap instead, and have the logo text in white rather than black, so you would effectively have the logo inversed.