How to make background: fixed work on Iphone?

Question

css

Works everywhere but not on iphone.

Answer 1

Fix not the background, but the block or pseudo-element.

body:before {
    content: '';
    background-image: url(...);
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: -1;
}