If you're using Bootstrap 3 responsive layouts, use the pull-left or pull-right helper classes.
CODE DEMO:
<!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 Helper Classes</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">
div, p{
margin: 20px;
padding: 20px;
background: #f0e68c;
}
</style>
</head>
<body>
<div class="pull-left">Float to left</div>
<p class="pull-left">Float to left</p>
<div class="pull-right">Float to right</div>
<p class="pull-right">Float to right</p>
</body>
</html>