<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"> <div class="row "> <div class="row "> <div class="col-12 col-lg-12 bg-warning ">1</div> <div class="col-12 col-lg-12 bg-info order-sm-1 ">3</div> </div> <div class="row "> <div class="col-12 col-lg-12 bg-success float-lg-left ">2</div> </div> </div> </div>