text: import React from 'react';
  import { Link } from 'gatsby';
  import Layout from '../components/layout';
  import Head from '../components/head';
  
  const NotFound = () => {
      return (
          <Layout>
              <Head title='404' />
              <h1> Page not found</h1>
              <p><Link to='/'>Head back home</Link></p>
          </Layout>
      )
  }
  
  export default NotFound