I have a brand new project created with `create-react-app`. I have added bootstrap:

```
npm install --save bootstrap@3

```

And I've imported it at my root `index.js`:

```
import 'bootstrap/dist/css/bootstrap.css';

```

Now I've added the Navbar example from the [Bootstrap documentation](https://v4-alpha.getbootstrap.com/components/navbar/) to the top of the default `App.js` jsx and I get an unformatted mess.

I know that bootstrap is working in this file because I also added a button that is being styled properly via bootstrap. But the navbar isn't working at all.

Here is my `App.js`:

```
import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';

class App extends Component {
  render() {
    return (
      <div className="App">
        <nav className="navbar navbar-toggleable-md navbar-light bg-faded">
          <button className="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
            <span className="navbar-toggler-icon"></span>
          </button>
          <a className="navbar-brand" href="#">Navbar</a>
          <div className="collapse navbar-collapse" id="navbarNav">
            <ul className="navbar-nav">
              <li className="nav-item active">
                <a className="nav-link" href="#">Home <span className="sr-only">(current)</span></a>
              </li>
              <li className="nav-item">
                <a className="nav-link" href="#">Features</a>
              </li>
              <li className="nav-item">
                <a className="nav-link" href="#">Pricing</a>
              </li>
              <li className="nav-item">
                <a className="nav-link disabled" href="#">Disabled</a>
              </li>
            </ul>
          </div>
        </nav>
        <div className="App-header">
          <img src={logo} className="App-logo" alt="logo" />
          <h2>Welcome to React</h2>
        </div>
        <p className="App-intro">
          To get started, edit <code>src/App.js</code> and save to reload.
        </p>
        <button className="btn">Button</button>
      </div>
    );
  }
}

export default App;

```