text: import React from 'react'
  import Proptypes from 'prop-types'
  import './Header.css'
  
  export default function Header({ heading, subheading }) {
    return (
      <header className="header">
        <h1>{heading}</h1>
        <p>{subheading}</p>
      </header>
    )
  }
  
  Header.propTypes = {
    heading: Proptypes.string.isRequired,
  }
  