select.html

<link rel="stylesheet" href="view-source:http://davidstutz.de/bootstrap-multiselect/docs/css/bootstrap-3.3.2.min.css" type="text/css"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript" src="view-source:http://davidstutz.de/bootstrap-multiselect/docs/js/bootstrap-3.3.2.min.js"></script>
 
<!-- Include the plugin's CSS and JS: -->
<script type="text/javascript" src="view-source:http://davidstutz.de/bootstrap-multiselect/dist/js/bootstrap-multiselect.js"></script>
<link rel="stylesheet" href="view-source:http://davidstutz.de/bootstrap-multiselect/dist/css/bootstrap-multiselect.css" type="text/css"/>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>

<select id="example-getting-started" multiple="multiple">
    <option value="cheese">Cheese</option>
    <option value="tomatoes">Tomatoes</option>
    <option value="mozarella">Mozzarella</option>
    <option value="mushrooms">Mushrooms</option>
    <option value="pepperoni">Pepperoni</option>
    <option value="onions">Onions</option>
</select>



    <script type="text/javascript">
    $(document).ready(function() {
        $('#example-getting-started').multiselect();
    });
</script>