app/views/layouts/adminpanel/application-login.html.erb
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title><%= full_title(yield(:page_title)) %></title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<%= stylesheet_link_tag "adminpanel/application", :media => "all" %>
<%= javascript_include_tag "adminpanel/application" %>
<%= csrf_meta_tags %>
<%= favicon_link_tag "adminpanel/favicon.ico" %>
<link href="http://fonts.googleapis.com/css?family=Open+Sans:400,700" rel="stylesheet" type="text/css">
<%= render 'layouts/adminpanel/shim' %>
</head>
<body>
<div id="wrap">
<%= render 'layouts/adminpanel/top_bar' %>
<div class="container-fluid">
<%= yield %>
<%= debug(params) if Rails.env.development? %>
</div>
<!--/.fluid-container-->
</div>
<!-- wrap ends-->
</body>
</html>