There are tabs in the block and after a couple of screens, fendiklushki (parallax) are going on, everything is ok, they go behind the screen from above and below, but if you add 5-10 tabs of tabs, everything should be ok and it’s not connected in any way but these files start to disappear than go behind the screen, and if you add even more tabs, they will not be visible. How to fix it and what is it connected with?
Between these screens there are a couple more pieces and their height is about 1000px. Can you explain what's going on?