<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="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="row">
<div class="line1 col-md-9 push-md-3">.col-md-9 .push-md-3</div>
<div class="line2 col-md-3 pull-md-9">.col-md-3 .pull-md-9</div>
</div>
