Fixed block twitches when scrolling on mobile?

Question

css

When scrolling on mobile (closer to the basement), the lower fixed plate twitches.
so I understood from the Yandex map, if you remove it, everything is ok.
how can it be repaired?

https://st-test555.000webhostapp.com/test2.html

Answer 1

try
<meta name="viewport" content="minimum-scale=1">