content: import React, { Component } from 'react';
  import { Link } from 'react-router';
  
  class NotFound extends Component {
    render() {
      return (
        <article>
          <h1>Page not found.</h1>
          <Link to="/" className="btn">Home</Link>
        </article>
      );
    }
  }
  
  export default NotFound;
  