<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>
<div class="container">
<div class="row">
<div class="col-lg-8 col-lg-offset-2 col-md-10 col-md-offset-1">
<div id="wrap">
<form action="" autocomplete="on">
<input id="search" name="search" type="text" placeholder="What're we looking for ?"><input id="search_submit" value="Rechercher" type="submit">
</form>
</div>
</div>
</div>
</div>