Prevent horizontal touch-drag

Hi there,
I´ve got a fixed Footer on my page, which reveals when you scroll to the bottom of the page.
The main page content is above the footer. The result is, that the main page content can be touch-dragged horizontaly, and the Footer behind it can be seen, when dragged. (See Video).
Is there an option to prevent this horizontal drag behavior?
(Currently not working on Safari)

Here is my site Read-Only: LINK

It was a bug related to a calculated width.