<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> <!------ Include the above in your HEAD tag ----------> <div class="container-fluid h-100"> <div class="row justify-content-center h-100"> <div class="col-4" style="background:#ccc"> <div class="align-middle"> 101 </div> </div> <div class="col-8" style="background:red"> 1 </div> </div> </div>

html,body { height: 100%; }