Trying to get a banner image under the logo and primary menu

Hi

Trying to get a banner (text + image) under the logo and primary menu - but the banner keeps aligning to the right (as the menu is floated right) whereas I want it to sit under logo and menu

I have the banner created as an elements block - full width container with background image

The menu is the usual logo and primary menu - float right

Any thoughts?? Image of what I want to achieve (I need to tweak look and feel of test etc etc but trying to get the basics to work) and link in private section

Thanks
Sarah