<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<body>
<div id="navbar-wrapper">
<header>
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Sidebar Template</a>
</div>
<div id="navbar-collapse" class="collapse navbar-collapse">
<form class="navbar-form navbar-left" role="search">
<div class="input-group">
<input type="text" class="form-control" placeholder="Search">
<span class="input-group-btn">
<button class="btn btn-default" type="submit"><span class="glyphicon glyphicon-search" aria-hidden="true"></span></button>
</span>
</div>
</form>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a id="flag" href="#" class="dropdown-toggle" data-toggle="dropdown">
<img src="http://www.country-dialing-codes.net/img/png-country-4x2-fancy-res-1280x960/gb.png" alt="English" width="28px" height="18px">
</a>
<ul class="dropdown-menu dropdown-menu-flag" role="menu">
<li>
<a href="#">
<img src="http://www.country-dialing-codes.net/img/png-country-4x2-flat-res-640x480/gf.png" alt="Français" width="28px" height="18px">