Why does a fixed background-image move when scrolling on IE?

Question

I\'m trying to make background-image fixed.

As you see in my blog, the background-image is moving when scrolling on IE 11.

How can

Answer 1

Using this script: https://stackoverflow.com/a/34073019/7958220

To detect the edge browser, I then changed the style for html and body.

if (document.documentMode || /Edge/.test(navigator.userAgent)) {
   document.documentElement.style.overflow = "hidden";
   document.documentElement.style.height = "100%";
   document.body.style.overflow = "auto";
   document.body.style.height = "100%"; 

}