Responsive Discrepency - Structura Theme

Permalink
I'm showing a difference between the responsive inspector in Chrome as well as other online responsive preview tools when it comes to iPad (landscape). The responsive previews show my menu as stacking on top of the orbit slider. Now, when I actually look at the page on an iPad (landscape), the mobile menu shows up and everything looks great.

Is there a reason I'm not seeing the mobile menu in any of the responsive previews?

Thank you -