hide scroll bar and show when hover with small size

1/*Auto hide scrollbar for PC only*/
2@media (min-width:576px) {
3    /* Hide scrollbar for Chrome, Safari and Opera */
4    .hide-scrollbars::-webkit-scrollbar {
5        /*display: none; to completely hide the scrollbar*/ 
6        -webkit-appearance: none;        
7        width: 4px; /*scrollbar width for vertical one*/
8        height: 4px; /*scrollbar width for horizontal one*/
9    }
10
11    .hide-scrollbars::-webkit-scrollbar-thumb {        
12        visibility: hidden;
13        border-radius: 2px;
14        background-color: rgba(0, 0, 0, .1);
15        -webkit-box-shadow: 0 0 1px rgba(255, 255, 255, .1);
16    }
17
18    .hide-scrollbars::-webkit-scrollbar-thumb:hover {        
19        visibility: visible;        
20    }
21
22    /* Hide scrollbar for IE, Edge and Firefox */  
23    .hide-scrollbars{
24        -ms-overflow-style: none;  /* IE and Edge */
25        scrollbar-width: none;  /* Firefox */
26    }
27}