JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Scrollable TabStrip in a Splitter</title>
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.2.620/styles/kendo.common.min.css">
    <link rel="stylesheet" href="//kendo.cdn.telerik.com/2018.2.620/styles/kendo.bootstrap.min.css" />
    <style>html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }</style>

    <script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2018.2.620/js/kendo.all.min.js"></script>
  <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.2.620/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.2.620/styles/kendo.bootstrap-v4.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2018.2.620/styles/kendo.mobile.all.min.css">
<script src="https://kendo.cdn.telerik.com/2018.2.620/js/angular.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2018.2.620/js/jszip.min.js"></script>
</head>
  <body>

    <div id="splitter">
      <div>
        <div id="tabstrip">
          <ul>
            <li class="k-state-active">
              Tab 1 with long text
            </li>
            <li>
              Tab 2 with long text
            </li>
            <li>
              Tab 3 with long text
            </li>
            <li>
              Tab 4 with long text
            </li>
          </ul>
          <div>
            <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer felis libero, lobortis ac rutrum quis, varius a velit.</p>
          </div>
          <div>
            <p>Donec lacus erat, cursus sed porta quis, adipiscing et ligula. Duis volutpat, sem pharetra accumsan pharetra, mi ligula cursus felis, ac aliquet leo diam eget risus.</p>
          </div>
          <div>
            <p>Integer facilisis, justo cursus venenatis vehicula, massa nisl tempor sem, in ullamcorper neque mauris in orci.</p>
          </div>
         ...