content: import React from 'react';
  
  class Navigation extends React.Component {
      render() {
          return (
              <nav className="navbar navbar-inverse">
                  <div className="container-fluid">
                      <div className="navbar-header">
                          <a className="navbar-brand" href="#">Marvel Superheroes</a>
                      </div>
                  </div>
              </nav>
          );
      }
  }
  
  export default Navigation;
  