content: import React from 'react';
  import Container from '@material-ui/core/Container';
  import Typography from '@material-ui/core/Typography';
  import Box from '@material-ui/core/Box';
  import Link from '@material-ui/core/Link';
  import ProTip from './ProTip';
  
  function Copyright() {
    return (
      <Typography variant="body2" color="textSecondary" align="center">
        {'Copyright © '}
        <Link color="inherit" href="https://material-ui.com/">
          Your Website
        </Link>{' '}
        {new Date().getFullYear()}
        {'.'}
      </Typography>
    );
  }
  
  export default function App() {
    return (
      <Container maxWidth="sm">
        <Box my={4}>
          <Typography variant="h4" component="h1" gutterBottom>
            Parcel v4-beta example
          </Typography>
          <ProTip />
          <Copyright />
        </Box>
      </Container>
    );
  }
  