container
container-fluid
<html>
<body>
<div class="container">
<div class="row">
<div class="col-md-xx"></div>
...
</div>
<div class="row">
<div class="col-md-xx"></div>
...
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Job</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"/>
</head>
<body>
<div class="container">
<h1>Container</h1>
<p>container content</p>
</div>
<div class="container-fluid">
<h1>Container-fluid</h1>
<p>container-fluid content</p>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>