JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/css/bootstrap-combined.min.css">
<div id="top" class="container">
        <div class="navbar">
            <div class="navbar-inner">
                <ul class="nav">
                    <li><a href="index.php">Home</a></li>
                    <li><a href="books.php">Used books exchange</a></li>
                    <li><a href="submit.php">Submit a listing</a></li>
                    
                </ul>
            </div>
        </div>

CSS

.container {
    text-align: center;
    width: 100%;
}
.navbar {
    display: inline-block;
    margin-left: auto;
    margin-right: auto;
    border: solid 1 px;
}