content: import React from 'react';
  import PropTypes from 'prop-types';
  import { Grid } from 'react-bootstrap';
  import AppNavigation from '../components/AppNavigation';
  
  const App = ({ children }) => (
    <div>
      <AppNavigation />
      <Grid>
        { children }
      </Grid>
    </div>
  );
  
  App.propTypes = {
    children: PropTypes.node,
  };
  
  export default App;
  