JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<div class="navbar">
    <div class="navbar-inner">
        <ul class="nav">
            <li><a>Left</a></li>
        </ul>
        <ul class="nav nav-center">
            <li><a>Center 1</a></li>
            <li><a>Center 2</a></li>
        </ul>
        <ul class="nav pull-right">
            <li><a>Right</a></li>
        </ul>
    </div>
</div>

CSS

.container {
    margin-top: 10px;
}

.nav.nav-center {
    display: inline-block;
    left: 0;
    right: 0;
    margin:0;
    float:none;
}

.navbar-inner{
    text-align:center;
}