JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script src="https://vsn4ik.github.io/bootstrap-submenu/dist/js/bootstrap-submenu.min.js"></script>
<body>
  <nav class="navbar navbar-expand-lg navbar-light sakon-header fixed-top" id="mainNav">
    <a class="navbar-brand" href="">
        <img style="height:30px" src="assets/images/sakon-logo-horizontal.png" />
    </a>
    <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarResponsive"
        aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarResponsive">
        <ul class="navbar-nav navbar-sidenav sakon-sidebar" id="exampleAccordion">
        </ul>
    </div>
</nav>
</body>

JavaScript

function asyncData(){
$(document.body).append(`  `);
}

$(document).ready(function(){    
	setTimeout(asyncData,5000);
});