anchor.diff:  <div class="col mb-4">
   	<div class="card h-100 bg-mdb-color-lighten-7">
   		<div class="card-header bg-mdb-color-lighten-1 text-light">
  -      <% if current %>
  -        <%= link_to teachable.title_no_term,
  -                    teachable,
  -                    class: 'text-light' %>
  -      <% else %>
  -        <%= link_to teachable.title_no_term,
  -                   teachable,
  -                   class: 'text-light' %>
  +      <div class="row">
  +        <div class="col-10">
  +          <%= link_to teachable.title_no_term,
  +                      teachable,
  +                      class: 'text-light' %>
  +        </div>
  +        <div class="col-2">
  +          <% if subscribed %>
  +            <%= link_to '',
  +                        '',
  +                        class: 'far fa-minus-square text-light no-decoration',
  +                        data: { toggle: 'tooltip',
  +                                placement: 'bottom' },
  +                        title: t('basics.unsubscribe') %>
  +          <% else %>
  +            <%= link_to '',
  +                        '',
  +                        class: 'far fa-plus-square text-light no-decoration',
  +                        data: { toggle: 'tooltip',
  +                                placement: 'bottom' },
  +                        title: t('basics.subscribe') %>
  +          <% end %>
  +        </div>
  +      </div>
  +      <div class="row">
           <% if teachable.is_a?(Lecture) %>
  -          <br>
  -          <%= teachable.term.to_label_short %>
  -        <% end %>
  -      <% end %>
  -      <div>
  -        <% if teachable.is_a?(Lecture) %>
  -          <%= teachable.teacher.name %>
  +          <% unless current %>
  +            <div class="col-12">
  +              <%= teachable.term.to_label_short %>
  +            </div>
  +          <% end %>
  +          <div class="col-12">
  +            <%= teachable.teacher.name %>
  +          </div>
           <% else %>
  -          (<%= t('categories.course') %>)
  +          <div class="col-12">
  +            (<%= t('categories.course') %>)
  +          </div>
           <% end %>
         </div>
   		</div>
  
positive.code:                       title: t('admin.lecture.new_posts') %>
            <% end %>
          <% end %>
          <div>
          	<% if subscribed %>
              <%= link_to '',
                          '',
                          class: 'far fa-minus-square text-dark ml-3 no-decoration',
                          data: { toggle: 'tooltip',
                                  placement: 'bottom' },
                          title: t('basics.unsubscribe') %>
            <% else %>
              <%= link_to '',
                          '',
                          class: 'far fa-plus-square text-dark ml-3 no-decoration',
                          data: { toggle: 'tooltip',
                                  placement: 'bottom' },
                          title: t('basics.subscribe') %>
            <% end %>
          </div>
        </div>
    	</div>
  	</div>
  
negative.code:                           class: 'card-img-top',
                            alt: 'Card image cap'),
                  teachable %>
  
    	<div class="card-body">
        <% unless subscribed %>
          <% teachable.course.divisions.each do |d| %>
  