title: bootstrap mobile collapse nav not working
body: <p>Here's my markup, I followed the bootstrap docs exactly, but I have no idea why the menu doesn't collapse. Any help is welcome</p>
  
  <pre><code>&lt;!-- Navigation --&gt;
   &lt;nav class="navbar navbar-default navbar-custom navbar-fixed-top" role="navigation"&gt;
    &lt;div class="container-fluid"&gt;
  
  &lt;!-- Brand and toggle get grouped for better mobile display --&gt;
  &lt;div class="navbar-header"&gt;
    &lt;button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"&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="index.html"&gt;&lt;img src="#" alt="Lundan On The Beat Logo"&gt;&lt;/a&gt;
  &lt;/div&gt;
  
  &lt;!-- Collect the nav links, forms, and other content for toggling --&gt;
  &lt;div class="collapse navbar-collapse" id="#bs-example-navbar-collapse-1"&gt;
      &lt;ul class="nav navbar-nav navbar-right"&gt;
        &lt;li class="nav-item"&gt;&lt;a href="#home" class="active"&gt;Home&lt;/a&gt;&lt;/li&gt;
        &lt;li class="nav-item"&gt;&lt;a href="#services"&gt;Services&lt;/a&gt;&lt;/li&gt;
        &lt;li class="nav-item"&gt;&lt;a href="#gallery"&gt;Gallery&lt;/a&gt;&lt;/li&gt;
        &lt;li class="nav-item"&gt;&lt;a href="#contact"&gt;Contact&lt;/a&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>
  
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