text: import React, { Component } from 'react';
  import PropTypes from 'prop-types';
  
  export class Jumbotron extends Component {
      render() {
          return (<div style={{backgroundColor: "lightgrey", padding: 20}}>
              <h1>{this.props.message}</h1>
          </div>);
      }
  }
  
  Jumbotron.propTypes = {
      /** Jumbotron inner message */
      message: PropTypes.string.required
    };
  
  Jumbotron.defaultProps = {
      message: ""
    }
    