Hide scrollbars while using '-webkit-overflow-scrolling: touch' in Ionic4 Application

Is there any alternative for -webkit-overflow-scrolling: touch; to force smooth scrolling with momentum?

My problem

> div {
	overflow: auto;
	height: 100%;
	-webkit-overflow-scrolling: touch;

	&::-webkit-scrollbar {

If I use -webkit-overflow-scrolling: touch;, ::-webkit-scrollbar will loose his function and the scroll bars appearing again.

So… is there another way to activate smooth scrolling with momentum AND hide scrollbars in a Ionic 4 application? (Scrolling inside a div container)