app/views/layouts/application.html.erb
<!DOCTYPE html>
<html>
<head>
<title>OSRA</title>
<%= stylesheet_link_tag "application", media: "all" %>
<%= javascript_include_tag "application" %>
<%= csrf_meta_tags %>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<%= render 'layouts/header' %>
<div class="container-fluid">
<div class="row">
<%= render 'layouts/navigation' unless devise_controller? %>
<div class="content">
<%= render 'layouts/flashes' %>
<%= yield %>
</div>
</div>
</div>
<%= render 'layouts/footer' %>
</body>
</html>