nesting columns in bootstrap code example
Example 1: 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>
Example 2: nested columsn inside bootstrap
<div class="container-fluid">
<div class="col-lg-12">
<div class="row">
<div class="col-sm-6">
<div class="well">
<p>First Part</p>
</div>
</div>
<div class="col-sm-6">
<div class="well">
<p>Second Part</p>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-6">
<div class="well">
<div class="row">
<div class="col-md-6">
<div class="well">
<p>Nested 1</p>
</div>
</div>
<div class="col-md-6">
<div class="well">
<p>Nested 2</p>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="well">
<p>Nested 3</p>
</div>
</div>
<div class="col-md-6">
<div class="well">
<p>Nested 4</p>
</div>
</div>
</div>
</div>
</div>
<div class="col-sm-6">
<div class="well">
<p>Fourth Part[enter image description here][1]</p>
</div>
</div>
</div>
</div>
</div>