When I view my site in a mobile browser, there is a block of white space under the top black title bar and the feature image on the static page that is set as the front page.
The white space is not there in the regular desktop version.
I pulled up the theme demo site and viewed a full-width page to see if this was just how the theme works, but the demo site doesn't have the gap. I can't figure out what element or setting controls this.
I have not done much by way of modification, only changed a few colors in the CSS.
The site is at: http://www.denverzooaudiotour.com
I also posted a graphic with screenshots to explain the issue I am encountering at i.imgur.com/A0hGHVZ.jpg in case I am not explaining clearly.