anchor.diff:            <h3>Edytuj</h3>
             <%= simple_form_for [@course, @exam] do |f| %>
                 <%= f.input :name, label: "Nazwa" %>
  -              <%= f.input :duration, as: :integer, label: "DĹugoĹÄ w sekundach", input_html: { min: 0 } %>
  +              <%= f.input :duration, as: :integer, label: "Długość w sekundach", input_html: { min: 0 } %>
                 <div class="form-group">
                   <label for="minutes_helper">Minuty</label>
                   <input type="number" id="minutes_helper" min="0" name="minutes" value="<%= @exam.duration / 60 %>">
  
positive.code:                 <label for="seconds_helper">Sekundy</label>
                  <input type="number" id="seconds_helper" min="0" max="59" name="seconds" value="<%= @exam.duration % 60 %>">
                </div>
                <%= f.input :published, as: :boolean, label: "DostÄpny" %>
                <%= f.button :submit, "Zaaktualizuj" %>
            <% end %>
            <div class="row-separator">
  
negative.code:           <div class="row question_category" data-id=<%= qc.id %>>
                <div class="col-xs-12">
                    <div class="show_more">
                      <a href="#" data-closed="Rozwiń" data-open="Zwiń" data-expand="q_c_details">Rozwiń</a>
                    </div>
                    <h4 class="q_c" data-id=<%= qc.id %>><%= qc.name %></h4>
                    <div class="hidden to_expand q_c_details">
                      <a href="#" title="Edytuj" class="edit_qc_link">
                        Zmień nazwę
                      </a>
                      <div class="qc_edit_form hidden">
                        <%= simple_form_for([@exam, qc], remote: true, data: { type: 'json' }) do |f| %>
                          <%= f.input :name, label: "Nowa nazwa" %>
                        <% end %>
                      </div>
                      <p><%= link_to "Usuń kategorię", exam_question_category_path(@exam, qc), method: :delete %></p>
                      <a href="#" title="Nowe pytanie" class="new_question_link">
                        Nowe pytanie
                      </a>
                      <div class="hidden to_expand new_question_form">
                          <b>Nowe pytanie</b>
                          <%= simple_form_for [@exam, qc, Question.new], html: { remote: true, class: 'new_question' } do |f| %>
                              <%= f.input :name, label: "Treść", as: :text, input_html: {rows: "10", data: {provide: :markdown, language: :pl}} %>
                              <%= f.input :value, as: :integer, label: "WartoĹÄ" %>
                              <%= f.input :form, collection: {"Jednokrotnego wyboru" => 'single', "Wielokrotnego wyboru" => 'multiple', "Otwarte" => 'open'}, label: "Forma" %>
                              <%= f.button :submit, "Stwórz" %>
                          <% end %>
                      </div>
                      <div class="questions">
  