Banner Ads on Clean Magazine Free

Hi there! I'd like to add small banner ads on the top nav section of my website. I use Clean Magazine Free. Could I add a small banner ad from an advertiser in that section. I know I can create and use widgets which can add things to my left column or to the header or footer..but I'd like to keep my header logo the way it is without anything underneath it. My website is amishcountrynews.com Basically its an added feature that we could highlight ads but wasn't sure if I could create something at the very top above the top nav? or in the top nav area? Thank you!!!