JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://public.aliax.net/jquery.mCustomScrollbar.concat.min.js"></script>
<link rel="stylesheet" href="http://public.aliax.net/jquery.mCustomScrollbar.css">
<div class="container">  
   ...

CSS

.container {
    width: 200px;
    height: 130px;
    background: #999;
    border: 1px solid #000;
    overflow: auto;
}

JavaScript

$(".container").mCustomScrollbar();