anchor.diff:          <% end -%>
   
           <div class="form-group">
  -          <%= f.submit "Log in", class: "btn btn-primary" %>
  +          <%= f.submit "Log in (credentials are already entered)", class: "btn btn-primary" %>
           </div>
         <% end %>
   
  
positive.code:       </div>
      </div>
    </div>
  </div>
negative.code:         <%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %>
            <div class="form-group">
              <%= f.label :email %><br />
              <%= f.email_field :email, value: 'guest@gmail.com', autofocus: true, class: "form-control" %>
            </div>
  
            <div class="form-group">
              <%= f.label :password %><br />
              <%= f.password_field :password, value: 'password', class: "form-control" %>
            </div>
  
          <% if devise_mapping.rememberable? -%>
  