anchor.diff:  
       <div class="form-group">
         <%= f.label :guider_name %>
  -      <%= f.text_field :guider_name, class: %w(form-control input-md-3 t-guider-name) %>
  +      <%= f.text_field :guider_name, class: %w(form-control input-md-3 t-guider-name), readonly: true %>
       </div>
   
       <hr>
  
positive.code:         <div class="radio">
            <%= f.label :appointment_type, value: 'standard' do %>
              <%= f.radio_button :appointment_type, 'standard',
                                 class: 't-appointment-type-standard' %>
              Appointment for customers aged 55+
            <% end %>
          </div>
          <div class="radio">
            <%= f.label :appointment_type, value: '50_54' do %>
              <%= f.radio_button :appointment_type, '50_54',
                                 class: 't-appointment-type-50-54' %>
              Appointment for customers aged 50-54
            <% end %>
          </div>
  
negative.code: 
      <div class="form-group">
        <%= f.label :first_name %>
        <%= f.text_field :first_name, class: %w(form-control input-md-3 t-first-name), readonly: true %>
      </div>
  
      <div class="form-group">
        <%= f.label :last_name %>
        <%= f.text_field :last_name, class: %w(form-control input-md-3 t-last-name), readonly: true %>
      </div>
  
      <div class="form-group">
        <%= f.label :email %>
        <%= f.text_field :email, class: %w(form-control t-email input-md-3), readonly: true %>
      </div>
  
      <h3 id="postal-address-heading">Postal address</h3>
  