app/views/pages/error.html.erb
<%= content_for :body_class, 'error' %>
<%= render partial: 'pages/navigation' %>
<div class="gift error">
<h1 class="gift_heading">
<%= 'Something Broke!' %>
</h1>
<h2>
Don't worry though, we've been notified.
</h2>
<div class="gift_image"></div>
</div>