text: import React from 'react';
  import PropTypes from 'prop-types';
  import './Display.css';
  
  const Display = ({ result }) => (
    <div className="Display">
      <h1>{result}</h1>
    </div>
  );
  
  Display.defaultProps = {
    result: '0',
  };
  
  Display.propTypes = {
    result: PropTypes.string,
  };
  
  export default Display;
  