app/views/content/components/_collection_header.html.erb
<div class="parallax-header slider" style="height: 1px; position: relative; top: -1px">
<ul class="slides">
<li>
<%= image_tag(collection.first_public_image) %>
<div class="caption center-align bordered-text">
<%= link_to collection, class: 'white-text' do %>
<h4>
<i class="material-icons <%= PageCollection.text_color %>"><%= PageCollection.icon %></i>
<%= collection.title %>
</h4>
<% end %>
<h5 class="light grey-text text-lighten-3">
<% if collection.subtitle? %>
<%= collection.subtitle %>
<% else %>
<% collection.page_types.each do |pt| %>
<% klass = content_class_from_name(pt) %>
<i class="material-icons <%= klass.text_color %> tooltipped" data-tooltip="This collection contains <%= pt.downcase.pluralize %>"><%= klass.icon %></i>
<% end %>
<% end %>
</h5>
<% if collection.user.present? %>
<div>
A <%= collection.privacy %> collection by <%= link_to collection.user.display_name, collection.user, class: "#{User.text_color}" %>
</div>
<% end %>
</div>
</li>
</ul>
</div>