content: import React, { Component } from 'react';
  import { BrowserRouter as Router, Route, Link } from 'react-router-dom';
  import ContactList from './containers/ContactList';
  import ContactCreate from './containers/ContactCreate';
  import ContactEdit from './containers/ContactEdit';
  import './App.css';
  
  class App extends Component {
    render() {
      return (
        <Router>
          <div>
            <nav className="navbar navbar-default">
              <div className="container-fluid">
                <div className="navbar-header">
                  <Link className="navbar-brand" to="/">React Apz</Link>
                </div>
              </div>
            </nav>
            <section id="content" className="container-fluid">
              <h2>Contacts Manager</h2>
              <div className="container">
                <Route exact path="/" component={ContactList} />
                <Route path="/new" component={ContactCreate} />
                <Route path="/edit/:contactId" component={ContactEdit} />
              </div>
            </section>
          </div>
        </Router>
      );
    }
  }
  
  export default App;
  