css - What is the error in this html code? -

i taking class code academy on html , css. right on section dealing bootstrap , stuck. directions add "pull-left" class first ul element , "pull-right" element second ul element. code seems me whenever try save , submit gives me error: "oops, try again. add class "pull-right" second ul element."

i have no idea i'm doing wrong here because have added "pull-right" class second ul element.

<ul class="pull-left"> <ul> <li><a href="#">name</a></li> <li><a href="#">browse</a></li></ul>     </ul>     </ul>     <ul class="pull-right">     <ul>     <li><a href="#">sign up</a></li>     <li><a href="#">log in</a></li>     <li><a href="#">help</a></li>      </ul>       </ul> 

does know why code academy giving me error??!!

you had many <\ul> tags see. try , see if it's better

<ul class="pull-left">     <li><a href="#">name</a></li>     <li><a href="#">browse</a></li> </ul>  <ul class="pull-right">     <li><a href="#">sign up</a></li>     <li><a href="#">log in</a></li>     <li><a href="#">help</a></li>  </ul>