How to make an element with position:fixed not twitching on Apple mobile devices with Safari?

Question

css

Good afternoon! I just can’t understand what the problem is, when scrolling through the material, the top panel twitches terribly. Panel with z-index 600, position:fixed. The problem is only on Apple mobile devices, example material .
Where to dig?

Answer 1

-webkit-transform:translateZ(1px);
      -moz-transform:translateZ(1px);
      -o-transform:translateZ(1px);
      transform:translateZ(1px);