<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <div class="col"> </div> <div class="col"> </div> <div class="col"> </div> </div> </div>

.row{display:flex; justify-content:space-between ; margin:30px 0;} .col{background:#333; height:400px; box-sizing:border-box; flex-basis:30%;} @media(min-width:900px){ .row{display:flex; justify-content:space-between ;} }