<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/3.2.1/jquery.min.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/2.0.2/TweenMax.min.js"></script>
<h1>Burger Navigation</h1>
<div class="nav">
<div class="toggle-btn">
<span class="one"></span>
<span class="two"></span>
</div>
<div class="menu">
<div class="data">
<ul>
<li>Navigation</li>
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Works</a></li>
<li><a href="#">Contact</a></li>
</ul>
</div>
</div>
</div>
<div class="example">
</div>
<script>
var t1 = new TimelineMax({paused: true});
t1.to(".one", 0.8, {
y: 6,
rotation: 45,
ease: Expo.easeInOut
