JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.github.com/ograycode/bootstrap/2.3.0-wip/js/bootstrap-collapse.js"></script>
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap-responsive.css">
<div class="navbar navbar-inverse navbar-fixed-top">
      <div class="navbar-inner">
        <div class="container">
          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </a>
          <a class="brand" href="#">Nav One</a>
          <div class="nav-collapse collapse">
            <ul class="nav">
              <li class="active"><a href="#">Home</a></li>
              <li><a href="#about">About</a></li>
              <li><a href="#contact">Contact</a></li>
            </ul>
          </div><!--/.nav-collapse -->
        </div>
      </div>
    </div>

<div class="navbar navbar-inverse navbar-fixed-top navbar-two">
      <div class="navbar-inner">
        <div class="container">
          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </a>
          <a class="brand" href="#">Nav Two</a>
          <div class="nav-collapse collapse">
            <ul class="nav">
              <li class="active"><a href="#">Home</a></li>
              <li><a href="#about">About</a></li>
              <li><a href="#contact">Contact</a></li>
            </ul>
          </div><!--/.nav-collapse -->
        </div>
      </div>
    </div>

<h1> With Fix </h1>

CSS

<style>
      body {
        padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */
      }
    .navbar-two {
        padding-top: 40px;
    }
</style>