Mobile menu is there – but invisible!

Not invisible exactly – on my IPhone, the top drop down menu functions properly but I can’t see it!

In other words I can blindly tap and get links, but the entire interface is white and you can’t see the links. I’m guessing the link color is set to white, but I really don’t know.

I am way out of my league here and don’t know where to begin looking for the problem.

Any input on this would be greatly appreciated!

Thanks in advance,
-Peter