<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/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"> <div class="row"> <div class="col-md-3 col-sm-6 col-xs-12 bg-primary">Col 1</div> <div class="col-md-3 col-sm-6 col-xs-12 bg-warning">Col 2</div> <div class="clearfix visible-sm"></div> <div class="col-md-3 col-sm-6 col-xs-12 bg-info">Col 3</div> <div class="col-md-3 col-sm-6 col-xs-12 bg-success">Col 4</div> </div> </div>