Middle navigator that swipe in webflow's template page

Dear @PixelGeek .
I am learning how to use webflow from your Youtube lecture.
In the lecture of “The basics of site structure (2016. 11. 29.)” , there was a question from participants that you cannot imagine what could be the answer.

Maybe I am wrong, but the question was the middle Navbar that acts in the webflow’s template page.

When the size of width get smaller, the nav can be swiped right and left.
I am also really want to know how to make this using webflow.

If you don’t mind, could you tell me and the people watched that lecture?

from Korea