<link href="assets/css/bootstrap-responsive.css" rel="stylesheet">

<!-- .btn-navbar is used as the toggle for collapsed navbar content -->
<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>

.btn-navbar {
display: none;
float: right;
padding: 7px 10px;
margin-left: 5px;
margin-right: 5px;
background-color: #2c2c2c;
background-image: -moz-linear-gradient(top, #333333, #222222);
background-image: -ms-linear-gradient(top, #333333, #222222);
background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#333333), to(#222222));
background-image: -webkit-linear-gradient(top, #333333, #222222);
background-image: -o-linear-gradient(top, #333333, #222222);
background-image: linear-gradient(top, #333333, #222222);
background-repeat: repeat-x;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#333333', endColorstr='#222222', GradientType=0);
border-color: #222222 #222222 #000000;
border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
filter: progid:dximagetransform.microsoft.gradient(enabled=false);
-webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
-moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
}
.btn-navbar:hover,
.btn-navbar:active,
.btn-navbar.active,
.btn-navbar.disabled,
.btn-navbar[disabled] {
background-color: #222222;
}
.btn-navbar:active,
.btn-navbar.active {
background-color: #080808 \9;
}
.btn-navbar .icon-bar {
display: block;
width: 18px;
height: 2px;
background-color: #f5f5f5;
-webkit-border-radius: 1px;
-moz-border-radius: 1px;
border-radius: 1px;
-webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
-moz-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}
.btn-navbar .icon-bar + .icon-bar {
margin-top: 3px;
}

@media (max-width: 979px) {
body {
padding-top: 0;
}
.navbar-fixed-top {
position: static;
margin-bottom: 18px;
}
.navbar-fixed-top .navbar-inner {
padding: 5px;
}
.navbar .container {
width: auto;
padding: 0;
}
.navbar .brand {
padding-left: 10px;
padding-right: 10px;
margin: 0 0 0 -5px;
}
.navbar .nav-collapse {
clear: left;
}
.navbar .nav {
float: none;
margin: 0 0 9px;
}
.navbar .nav > li {
float: none;
}
.navbar .nav > li > a {
margin-bottom: 2px;
}
.navbar .nav > .divider-vertical {
display: none;
}
.navbar .nav .nav-header {
color: #999999;
text-shadow: none;
}
.navbar .nav > li > a {
padding: 6px 15px;
font-weight: bold;
color: #999999;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
border-radius: 3px;
}
.navbar .nav > li > a:hover{
background-color: #222222;
}
.btn-navbar {
display: block;
}
.nav-collapse {
overflow: hidden;
height: 0;
}
}

<!-- javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="assets/js/jquery.js"></script>
<script src="assets/js/bootstrap-collapse.js"></script>
<script type="text/javascript">
$(".collapse").collapse()
</script>

<div class="container-fluid">
<div class="row-fluid">
<div class="span3">
<!--Sidebar content-->
</div>
<div class="span9">
<!--Main content-->
</div>
</div>
</div>

<div class="container-fluid">
<div class="row-fluid">
<div class="span3">
<!--Sidebar content-->
<div class="well sidebar-nav">
<ul class="nav nav-list">
<li class="nav-header">Sidebar</li>
<li class="active"><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
</ul>
</div><!--/.well -->
</div>
<div class="span9">
<!--Main content-->
</div>
</div>
</div>

.well {
min-height: 20px;
padding: 19px;
margin-bottom: 20px;
background-color: #f5f5f5;
border: 1px solid #eee;
border: 1px solid rgba(0, 0, 0, 0.05);
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
-moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
}
.nav-list {
padding-left: 15px;
padding-right: 15px;
margin-bottom: 0;
}
.nav-list > li > a,
.nav-list .nav-header {
margin-left: -15px;
margin-right: -15px;
text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}
.nav-list > li > a {
padding: 3px 15px;
}
.nav-list > .active > a,
.nav-list > .active > a:hover {
color: #ffffff;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.2);
background-color: #0088cc;
}
.nav-list [class^="icon-"] {
margin-right: 2px;
}
.nav-list .divider {
height: 1px;
margin: 8px 1px;
overflow: hidden;
background-color: #e5e5e5;
border-bottom: 1px solid #ffffff;
*width: 100%;
*margin: -5px 0 5px;
}

<div class="container-fluid">
<div class="row-fluid">
<div class="span3">
<!--Sidebar content-->
<div class="well sidebar-nav">
<ul class="nav nav-list">
<li class="nav-header">Sidebar</li>
<li class="active"><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
</ul>
</div><!--/.well -->
</div>
<div class="span9">
<!--Main content-->
<div class=" well hero-unit">
<h1>Hello, world!</h1>
<p>This is a template for a simple marketing or informational website. Use it as a starting point to create something more unique.</p>
</div>
</div>
</div>
</div>

.hero-unit {
padding: 60px;
margin-bottom: 30px;
background-color: #eeeeee;
-webkit-border-radius: 6px;
-moz-border-radius: 6px;
border-radius: 6px;
}
.hero-unit h1 {
margin-bottom: 0;
font-size: 60px;
line-height: 1;
color: inherit;
letter-spacing: -1px;
}
.hero-unit p {
font-size: 18px;
font-weight: 200;
line-height: 27px;
color: inherit;
}

@media (max-width: 767px) {
.row-fluid > [class*="span"] {
float: none;
display: block;
width: auto;
margin: 0;
}
}