I’ve created a Home Page, set up a Posts page, trying to set up a third page with different focus and subject matter – same themes and layout. However, 3rd page only shows material already posted on 2nd page. Menu is fine – just 3rd page doesn’t display material entered on ‘add page’ field. Can be seen at http://www.dcwhyte.com
Mimbo Pro is a premium theme and your have been doing some CSS editing. We regular Volunteers have zero experience with premium themes and those of us who remain don’t provide CSS editing support. I’m thinking you may fare better by posting to the premium themes forum than you will here.
If you are not successful when searching there is a link for the specific Premium Theme support forum for your theme under Appearance -> Themes in your blog’s Dashboard, but do note that the premium theme must be active and you must be signed in as the user who purchased it in order to see it and post to it.