CSS background-position not working in Mobile Safari (iPhone/iPad)

Question

I have an issue with background-position in mobile safari. It works fine on other desktop browsers, but not on iPhone or iPad.

body {
 background-color: #000         


        

Answer 1

It'll work with

background-position-x: 50%;
background-position-y: 0%;

and still add

background-position: center top;

for other browsers.