Having trouble with my navbar toggler code. I've tried multiple times, but the button is not expanding to show the list on both mobile and desktop screens. Any suggestions?
Edit-1: After adding "https" before the HTTP in jquery link, the toggle collapses quickly without holding the expanded form.
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title></title>
<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand " href="#">Logo</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"> </span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ol class="navbar-nav ml-auto">
<li class="navbar-item">
<a class="nav-link" href="#">Contact</a>
</li>
<li class="navbar-item">
<a class="nav-link" href="#">Skills</a>
</li>
<li class="navbar-item">
<a class="nav-link" href="#">Profile</a>
</li>
</ol>
</div>
</nav>
</body>
</html>