A tip for you: please don't use background-attachment:fixed because it forces a repainting and the resultant drop below 60fps does your lib no credit. If you a

A tip for you: please don't use background-attachment:fixed because it forces a repainting and the resultant drop below 60fps does your lib no credit. If you alter your approach you can still achieve the same effect by making use of position:fixed with either transform:translateZ(0) or will-change:transform to establish a new paint layer and enable hardware acceleration, so scrolling down (a common activity) doesn't drop below 60fps.