Jumping mobile display on scroll

Hi, I can’t figure out why on mobile display, when scrolling down, the display begins bouncing up and down… you can see the problem only on an actual mobile device.

This is the website: http://kushina.webflow.io/
And this is the shared link: https://preview.webflow.com/preview/kushina?preview=ffad806e12c6354a3bb383383ee37725

I appreciate your help!