Sorry for the questions, but I am a little naive about the layout issues.
So you mean that I cannot have an ad in the header position at all? Or just on the mobile layout?
Or is the ad just too large?
Is there some code I can add to extra.css to hide the header ad in mobile browsers?
In the desktop layout, I notice that for guests, the "project of the month" is over the logo, as on the mobile layout, until I log in, and then it moves to the side, and appears correctly.
I have just dealt with this for a looong while. Is there any way, short of not putting any header ad on the site, that I can fix this?