My bootstrap navbar that i got from the bootstrap jumbotron example won't collapse. If it is that i dont have the right javascript, css or Jquery links pls send me the right ones. I am kinda new to the navbar thing so i really need some help. Thank you! 
 Here is my code:

```
<nav class="navbar navbar-inverse navbar-static-top">
  <div class="container">
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target=".nav-collapse" aria-expanded="false" aria-controls="navbar">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">Project name</a>
    </div>
    <div id="navbar" class="navbar-collapse collapse">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Home</a></li>
        <li><a href="#about">About</a></li>
        <li><a href="#contact">Contact</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <li><a href="#">Action</a></li>
            <li><a href="#">Another action</a></li>
            <li><a href="#">Something else here</a></li>
            <li role="separator" class="divider"></li>
            <li class="dropdown-header">Nav header</li>
            <li><a href="#">Separated link</a></li>
            <li><a href="#">One more separated link</a></li>
          </ul>
        </li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="../navbar/">Default</a></li>
        <li><a href="./">Static top <span class="sr-only">(current)</span></a></li>
        <li><a href="../navbar-fixed-top/">Fixed top</a></li>
      </ul>
    </div><!--/.nav-collapse -->
  </div>
</nav>

```
['https://Stackoverflow.com/questions/40441026', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/6355698/']
Just figured out, since the object of the shape `(362L,)` is really a pandas series, I just need to change it to dataframe, like this:

```
pd.DataFrame(df)

```

That's it!
use

```
df.iloc[:, 0].apply(pd.Series)

```