javascript - Menu button with dropdown -

i want create menu dropdown dropdown won't work.

it fiddle. there code button don't show. don't know why. here fiddle: jsfiddle

          <ul class="dropdown-menu" role="menu">             <li><a href="#">action</a></li>             <li><a href="#">another action</a></li>             <li><a href="#">something else here</a></li>             <li class="divider"></li>             <li><a href="#">separated link</a></li>           </ul> 

i use bootstrap 3.0 here image how looks :

remove overflow:hidden of div , img css , assign .wrapper

working demo

.wrapper{   border: 1px solid black;   margin: 4em auto;   position: relative;   width: 502px;overflow:hidden; }