<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-switch/3.3.2/css/bootstrap3/bootstrap-switch.min.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-switch/3.3.2/js/bootstrap-switch.min.js"></script>
switch css files js files needed