bootstrap 2 column responsive classes code example
Example 1: Bootstrap 4 Grid
<!-- Control the column width, and how they should appear on different devices -->
<div class="row">
<div class="col-*-*"></div>
<div class="col-*-*"></div>
</div>
<div class="row">
<div class="col-*-*"></div>
<div class="col-*-*"></div>
<div class="col-*-*"></div>
</div>
<!-- Or let Bootstrap automatically handle the layout -->
<div class="row">
<div class="col"></div>
<div class="col"></div>
<div class="col"></div>
</div>
Example 2: bootstrap content fluid 2 column
<head>
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
</head>
<body>
<section id="contact">
<div class="container-fluid">
<div class="row">
<div class="col-xs-6"> map </div>
<div class="col-xs-6"> contact form </div>
</div>
</div>
</section>
</body>