anchor.diff:  <div class="row js-content-cards-list">
     <% content_list.each.with_index do |content, i| %>
  -    <div class="col s12 m4 l4 js-content-card-container">
  +    <div class="col s12 m6 l4 js-content-card-container">
         <div class="card sticky-action">
           <div class="card-image waves-effect waves-block waves-light">
             <% content_image = asset_path("card-headers/#{content_type.name.downcase.pluralize}.jpg") %>
  
positive.code:             <% if content.is_a?(Document) %>
                <%= content.reading_estimate %>
              <% else %>
                <%= ContentFormatterService.show(text: content.description, viewing_user: current_user) %>
              <% end %>
            </p>
          </div>
  
negative.code:             <%= content.name.presence || 'Document preview' %>
              <i class="material-icons right">close</i>
            </span>
            <% if content.is_a?(Document) || (content.description.try(:length) || 0 > 140) %>
              <p>
                <%= sanitize truncate(content.description || '<em>This document is blank.</em>', escape: false, length: 420) %>
              </p>
  