<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>BadgeApp</title>
  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
  <%= csrf_meta_tags %>
</head>
<body>
  <%= render 'layouts/header' %>
  <% flash.each do |message_type, message| %>
    <div class="alert alert-<%= message_type %>"><%= message %></div>
  <% end %>

  <div class="container">
  <%= yield %>
  </div>

  <%= render 'layouts/footer' %>
  <%= debug(params) if Rails.env.development? %>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>BadgeApp</title>
  <meta name=viewport content="width=device-width, initial-scale=1">
  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
  <%= csrf_meta_tags %>
</head>
<body>
  <%= render 'layouts/header' %>
  <% flash.each do |message_type, message| %>
    <div class="alert alert-<%= message_type %>"><%= message %></div>
  <% end %>

  <div class="container">
  <%= yield %>
  </div>

  <%= render 'layouts/footer' %>
  <%= debug(params) if Rails.env.development? %>
</body>
</html>

Modify layout to add viewport to improve mobile display
Modify layout to add viewport to improve mobile display

  - https://developers.google.com/speed/docs/insights/ConfigureViewport?hl=en
    describes why we should add the viewport.
