anchor.diff:            </div>
           <% end %>
         </div>
  -    </div>
  -  <% end %>  
  +  <% end %>
     <hr>
   
     <% if @registration %>
  
positive.code:       <div class="card">
          <% sessionList.each do |session| %>
            <div class="card-header striped-outer" id="session-header-<%= session.id %>">
              <h2 class="mb-0">
                <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#session-<%= session.id %>" aria-expanded="false" aria-controls="session-<%= session.id %>">
                  <%= session.name %>: <%= session.timeslot %>
                </button>
              </h2>
            </div>
  
            <div id="session-<%= session.id %>" class="collapse" aria-labelledby="session-header-<%= session.id %>" data-parent="#session-signup">
              <div class="card-body">
  
negative.code:     <%= button_to 'Edit', edit_event_path(@event), :class => 'btn btn-primary', :method => :get %>
    <% end %>
    <%= button_to 'Back', events_path, :class => 'btn btn-success', :method => :get %>
    </div>
  