app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title><%= content_for?(:title) ? yield(:title) : 'REMbooth' %></title>
<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>
</head>
<body>
<header>
<%= render 'layouts/navigation' %>
</header>
<main role="main">
<% if content_for? :intro %>
<div class="container-fluid header-fluid">
<%= yield :intro %>
</div>
<% end %>
<%= render 'shared/link_twitter_account' if ask_for_link_twitter_account? %>
<%= render 'layouts/messages' %>
<div class="container">
<%= yield %>
</div>
</main>
</body>
</html>