<section id="file-type">
   <h2 class="page-header">File Type Icons</h2>
 
   <div class="row fontawesome-icon-list">
     {% assign icons_file_type = icons | expand_aliases | category:"File Type Icons" | sort_by:'class' %}
 
     {% for icon in icons_file_type %}
       <div class="fa-hover col-md-3 col-sm-4"><a href="{{ page.relative_path }}icon/{{ icon.id }}"><i class="fa fa-{{ icon.class }}" aria-hidden="true"></i> <span class="sr-only">Example of </span>{{ icon.class }}{% if icon.alias_of %} <span class="text-muted">(alias)</span>{% endif %}</a></div>
     {% endfor %}
   </div>
 
 </section>