title: Bootstrap 3 multi level menu not showing second level items
body: <p>I am trying to create a multi level drop down menu using twitter Bootstrap 3. My HTML is :</p>
  
  <pre><code>&lt;div class="navbar navbar-default navbar-fixed-top" role="navigation"&gt;
    &lt;div class="container"&gt;
      &lt;div class="navbar-header"&gt;
        &lt;button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"&gt;
          &lt;span class="sr-only"&gt;Toggle navigation&lt;/span&gt;
          &lt;span class="icon-bar"&gt;&lt;/span&gt;
          &lt;span class="icon-bar"&gt;&lt;/span&gt;
          &lt;span class="icon-bar"&gt;&lt;/span&gt;
        &lt;/button&gt;
        &lt;a class="navbar-brand" href="#"&gt;Project name&lt;/a&gt;
      &lt;/div&gt;
      &lt;div class="navbar-collapse collapse"&gt;
        &lt;ul class="nav navbar-nav"&gt;
          &lt;li class="active"&gt;&lt;a href="#"&gt;Home&lt;/a&gt;&lt;/li&gt;
          &lt;li class="dropdown"&gt;
            &lt;a data-toggle="dropdown" class="dropdown-toggle" href="#"&gt;Dropdown &lt;b class="caret"&gt;&lt;/b&gt;&lt;/a&gt;
            &lt;ul class="dropdown-menu"&gt;
              &lt;li class="dropdown-submenu"&gt;
                &lt;a href="#"&gt;More options&lt;/a&gt;
                &lt;ul class="dropdown-menu"&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Second level link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Second level link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Second level link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Second level link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a href="#"&gt;Second level link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Another action&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Something else here&lt;/a&gt;&lt;/li&gt;
              &lt;li class="divider"&gt;&lt;/li&gt;
              &lt;li class="nav-header"&gt;Nav header&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Separated link&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;One more separated link&lt;/a&gt;&lt;/li&gt;
            &lt;/ul&gt;
          &lt;/li&gt;
  
        &lt;/ul&gt;
        &lt;ul class="nav navbar-nav navbar-right"&gt;
          &lt;li&gt;&lt;a href="../navbar/"&gt;Default&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="../navbar-static-top/"&gt;Static top&lt;/a&gt;&lt;/li&gt;
          &lt;li class="active"&gt;&lt;a href="./"&gt;Fixed top&lt;/a&gt;&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/div&gt;&lt;!--/.nav-collapse --&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>From the answer <a href="https://stackoverflow.com/questions/17380517/bootstrap-3-level-collapsing-menu">HERE</a>, I was expecting second level menus from <code>more options</code>. But its not showing. Whats wrong ?</p>