<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<link href="https://fonts.googleapis.com/css?family=Poppins:400,500,600,700" rel="stylesheet">
<div class="menu"> <span></span> </div>
<nav id="nav">
<ul class="main">
<li><a target="_blank" href="https://www.facebook.com/ravi7284007">Hi There! Ravi</a></li>
<li><a target="_blank" href="https://www.facebook.com/ravi7284007">About ME</a></li>
<li><a href="#">Web Development</a></li>
<li><a href="#">Digital Marketing</a></li>
<li><a target="_blank" href="https://www.instagram.com/ravi_singh_7/">Portfolio</a></li>
<li><a target="_blank" href="https://500px.com/ravi7284007">Contact</a></li>
</ul>
</nav>
<div class="overlay"></div>
<script>
$('.menu, .overlay').click(function () {
$('.menu').toggleClass('clicked');
$('#nav').toggleClass('show');
});
</script>