app/views/public/offline.html.erb
<div class='offline content'>
<h1><%= _('You are offline') %></h1>
<p><%= _('It was not possible to load this page.') %></p>
<p><%= _('Check your internet connection.') %></p>
<div class='offline-actions'>
<%= button :back, _('Go back'), '#', class: 'go-back' %>
<%= button :reload, _('Reload'), '#', class: 'reload' %>
</div>
</div>