<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> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <div class="col-sm-3 com-md-2 sidebar"> <ul class="nav nav-sidebar"> <li class="active"><%= link_to painel_path %></li> </ul> <ul class="nav nav-sidebar"> <li class="active"><a href="#">Finanças</a></li> <li><a href="#">Lançar crédito</a></li> <li><a href="#">Lançar débito</a></li> <li>Ver balanço financeiro</li> </ul> <ul class="nav nav-sidebar"> <li class="active">Serviços</li> <li>Cadastrar cliente</li> <li>Buscar cadastro</li> <li>Imprimir cadastro</li> <li>Novo orçamento</li> </ul> </div> </div> </div>