text: import React from 'react';
  import PropTypes from 'prop-types';
  
  const Header = ({titulo}) => {
    return (
      <div>
        <nav>
          <div className="nav-wrapper cyan lighten-4">
            <a href="#!" className="brand-logo">{titulo}</a>
          </div>
        </nav>
      </div>
    );
  };
  
  Header.propTypes = {
    titulo: PropTypes.string.isRequired
  }
   
  export default Header;
  