Live Demo: Example of Bootstrap 3 Clearfix

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Example of Bootstrap 3 Clearfix</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style type="text/css">
    .wrapper{
        margin: 20px;
        padding: 10px;
        background: #fffacd;
        border: 1px solid #000;
    }
    .pull-left, .pull-right{
        padding: 20px;
        background: #e3b740;
    }
</style>
</head> 
<body>
<div class="wrapper clearfix">
    <div class="pull-left">Float to left</div>
    <div class="pull-right">Float to right</div>
</div>
</body>
</html>