I'm a beginning theme developer. I'm building a simple site with Omega 3, and configuring a sub-theme for it. It's working pretty well. However, my problem is that I am trying to use NiceMenus with a custom png formatted logo. The logo height is 90px. I'm using the "Custom logo" setting and providing a path to the logo. This loads the logo at the top of the screen. The problem I'm having is that the NiceMenu dropdown menus appear over the top of the bottom of the png logo. The logo appears in the "branding" zone and the NiceMenu is put in the #zone-menu region. I've tried moving the NiceMenu block around and can't get it to appear below the logo image. It appears that there is some kind of conflict between the basic drupal logo display and where Omega wants a logo image to go.
Any help figuring this out would be much appreciated. I need the logo to go into a selected region and not overlap the other regions.