When scrolling the site on the mobile version, does the layout jump (scroll)?

Question

Layout

I started to layout the mobile version of the site, reached the end at a width of 320 pixels, but when I scroll down the page, the page twitches, as if some kind of effect on the page is triggered. I've been sitting for an hour, trying to find. What could be the reason?
https://goreska.github.io/nlalmaty/

Answer 1

I looked in the Google inspector with an extension of 320 pixels, I think this is because of the video, it is not at all adapted for you, see here as it should. In addition, you still have layout flaws (for example, icons in the footer), but I think you just haven't fixed everything yet. The second reason is probably parallaxes, but here I will not advise anything, because I have never done them myself)