Scrolling issue on position fixed element on iOS

Question

I am bulding a mobile project which has a number of modules having elements positioned as fixed. The issue which am facing is only on browsers running on iOS. The exact issue is that whenever I tr to scroll over the body of the page having , say the bottom toolbar, as fixed, the whole fixed element moves respectively with the scroll, and once the scroll ends completely, then only it comes back to its assigned place.

I have given the body of the page a relative css rule. Please help as this happens only on iOS.

 .add-to-block {
    background: #fff;
    position: fixed;
    bottom: 0px;
    right: 0px;
    display: block;
    height: auto;
    width: 100%;
    *(inner content element) {
        inner content element styling...
     }
}

Answer 1

Please try this, source here

    .add-to-block {
        transform: translate3d(0,0,0);
        .....
        .....
    }

Answer 2

There is not really an easy answer to this as it has been a known issue on ios for a while (supposedly fixed in ios8) but this gives you a few ways to fix it: https://remysharp.com/2012/05/24/issues-with-position-fixed-scrolling-on-ios it details all the issues with position fixed on ios devices and possible ways to fix it if you need to use it.

Answer 3

Safari allows you to scroll beyond the limits of the fixed div so that it can put in a nice bouncy effect. When you scroll past this point though, if there is a container that is scrollable, then subsequent touch events get handed off to this. Therefore scrolling does nothing for a bit until control gets handed back to the fixed div.

The fix is to give the container div the overflow-y: hidden style so that Safari does not hand off the touches, and we continue interacting with the fixed div.

Answer 4

Add height: 100% and overflow: auto for fixed element.

Full example at https://codepen.io/astnt/pen/ExgOqeX