Legit Mobile Menu Scrolling

Guys I’ve made a cool little menu but on mobile it doesn’t have the responsive feel I expected. You know when you scroll to the bottom and it bounces back up when you let go? How is that possible?

So far I just have a div set to 100vh and 100vh, fixed position and overflow set to auto. The menu links are in a div and it’s set to overflow auto with about 100px of padding top and bottom.

In the end my problem is that I can’t make it scroll all the way on one swipe it gets stuck.

Please try it out and let me know what you think I’m doing wrong. It’s so close!

Also here’s an example of a mobile menu that scrolls how it should: http://nwachristmas.org

Thanks!
Brad