content: import React from 'react';
  import { makeStyles } from '@material-ui/core/styles';
  import AppBar from '@material-ui/core/AppBar';
  import Toolbar from '@material-ui/core/Toolbar';
  import Typography from '@material-ui/core/Typography';
  
  const useStyles = makeStyles({
    root: {
      flexGrow: 1,
    },
  });
  
  function SimpleAppBar() {
    const classes = useStyles();
  
    return (
      <div className={classes.root}>
        <AppBar position="static" color="default">
          <Toolbar>
            <Typography variant="h6" color="inherit">
              Photos
            </Typography>
          </Toolbar>
        </AppBar>
      </div>
    );
  }
  
  export default SimpleAppBar;
  