Buttons on Navigation Bar
Description
For buttons not residing in a <form>, add this class to vertically center buttons within a navbar.
Example
<!DOCTYPE HTML>
<html>
<head>
<link href="http://java2s.com/style/bootstrap.min.css" rel="stylesheet">
<!--from w w w. j a v a2 s . c om-->
<script src="http://java2s.com/style/jquery-1.8.0.min.js"></script>
<script src="http://java2s.com/style/bootstrap.min.js"></script>
</head>
<body style='margin: 20px;'>
<div class="navbar">
<a href="#" class="navbar-brand">Brand</a>
<button type="button" class="btn btn-default navbar-btn">Sign
in</button>
</div>
</body>
</html>