Strange z-index behavior with scrollbars under Chrome

Question

Using z-index CSS property on \'fixed\' positioned elements gives me a strange behavior under Chrome.

When Firefox and Opera browsers give me the awaited result, Chrome

Answer 1

You may try to add -webkit-transform: translate3d(0, 0, 0). It solves my similar problem happened in mobile chrome.

Answer 2

I had some similar issues, and the only way to resolve I found was to apply some special styles to the webkit scrollbar in order to show it always. See http://jsfiddle.net/sinspiral/pTkQL/ with your example fixed.

This is not platform compatible (as on windows it will apply those styles too), so you might need to find a way, maybe js, to detect on which OS it is running.

.left::-webkit-scrollbar{
   -webkit-appearance: none;
}

.left::-webkit-scrollbar-thumb {
    background-color: rgba(50, 50, 50, .5);
    border: 3px solid transparent;
    border-radius: 9px;
    background-clip: content-box;
}

.left::-webkit-scrollbar-track {
    background-color: rgba(100, 100, 100, .5);
    width: 15px;
}