content: import React from 'react';
  import PropTypes from 'prop-types';
  import { withStyles } from '@material-ui/core/styles';
  import Button from '@material-ui/core/Button';
  
  const styles = theme => ({
    linkButton: {
      height: 60,
      color: theme.palette.grey[600],
      '&:hover': {
        color: theme.palette.secondary[50],
        borderBottom: `4px solid ${theme.palette.primary[500]}`,
        paddingBottom: 7,
        borderRadius: 0,
      },
    },
  });
  
  const NavBarLinkButton = ({ classes, children, ...rest }) => (
    <Button className={classes.linkButton} {...rest}>{children}</Button>
  );
  
  NavBarLinkButton.propTypes = {
    classes: PropTypes.object.isRequired,
    children: PropTypes.string.isRequired,
  };
  
  export default withStyles(styles)(NavBarLinkButton);
  