JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.1.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>
<select id="plain" size="3">
  <option value="first">First</option>
  <option value="second">Second</option>
  <option value="third">Third</option>
  <option value="fourth">Fourth</option>
</select>

<select id="fancy" size="3">
  <option value="first">First</option>
  <option value="second">Second</option>
  <option value="third">Third</option>
  <option value="fourth">Fourth</option>
</select>

JavaScript

$('#fancy').select2();