Boostrap 4 beta and Bootstrap Vue Navbar
HTML
<script src="https://unpkg.com/bootstrap-vue/dist/bootstrap-vue.js"></script>
<link rel="stylesheet" href="//unpkg.com/bootstrap@next/dist/css/bootstrap.min.css">
<link rel="stylesheet" href="//unpkg.com/tether@latest/dist/css/tether.min.css">
<link rel="stylesheet" href="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.css">
<script src="//unpkg.com/vue@latest/dist/vue.min.js"></script>
<script src="//unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.js"></script>
<!--PAGE CONTENT-->
<main role="main" class="container-fluid">
<div class="row text-center justify-content-center" style="border: 1px solid red; width: 100%; position: absolute">
<!--SELECT-->
<select id="selectList" style="width: 200px; position: relative; left: 50%; margin-left: -100px; ">
<option></option>
<option value="attendance">Närvaro</option>
<option value="students">Elever</option>
</select>
<hr>
<!--Js Content-->
<div id="jsContent"></div>
</div>
</main>