JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://dl.dropboxusercontent.com/u/1889847/tr/bootstrap.css">
<script src="https://dl.dropboxusercontent.com/u/1889847/tr/bootstrap.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<div id="main-navbar" class="navbar navbar-fixed-top">
  <div class="navbar-inner collapsed">
    <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="http://www.lifeparticipation.org/liquid.html" target="_blank">
        <div><img class="logo" id="logo" src="styles/imgs/logo.png"></div>
      </a>      

      <ul class="nav pull-right">
        <li class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown"><i class="icon-user accedi"></i> Accedi <b class="caret"></b></a>
            <ul class="dropdown-menu">
                <li><a href="#" class="loginFacebook"><span class="facebook">&nbsp;</span>facebook</a></li>                 
            </ul>
        </li>
      </ul><!-- <ul class="nav pull-right"> -->          
      <!-- Everything you want hidden at 940px or less, place within here -->
      <div class="nav-collapse collapse">
        <ul class="nav">
        <ul class="breadcrumb">
            <li><a href="#">Museo</a></li> 
        </ul>        
        </ul>
        <ul class="nav pull-right">   
            <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown"><img src="styles/imgs/flags/it.png"> <b class="caret"></b></a>
                <ul class="dropdown-menu">
                    <li><a href="#"><img src="styles/imgs/flags/it.png"> Italiano</a></li>
                    <li><a href="#"><img src="styles/imgs/flags/es.png"> Castellano</a></li>
                    <li><a...

CSS

.span6{
    background-color: red;
}