Logo obscuring menu after upgrade

Hi there,

I’ve recently upgraded my Oblivion theme. Since I did that, I’ve noticed that the logo on my homepage is obscuring the WordPress menu (so the one that contains Dashboard etc.). It’s as though the logo has been given greater priority over the menu.

The only way I can now get to the menu is to scroll down beneath the logo, and then it works as expected (or access it from a page that doesn’t have the logo).

Is there something I can do to change this behaviour?

Thanks,
Tricky.