content: import React, { Component } from 'react';
  import PropTypes from 'prop-types';
  import './AppHeader.css';
  import { Link } from 'react-router-dom';
  
  class AppHeader extends Component {
    render() {
      return (
        <header className="App-header">
          <nav className="main-nav">
            <div className="main-nav-left">
              <ul>
                <li><Link to="/"><span>Główna</span></Link></li>
                <li><Link to="/galery"><span>Galeria</span></Link></li>
                <li><Link to="/contact"><span>Kontakt</span></Link></li>
              </ul>
            </div>
            <div className="main-nav-right">
              <ul>
                <li style={{ float: "right" }} ><a href="#0"><span>Zarejestruj</span></a></li>
                <li style={{ float: "right" }} ><a href="#0"><span>Zaloguj</span></a></li>
              </ul>
            </div>
          </nav>
        </header>
      );
    }
  }
  
  AppHeader.propTypes = {
  
  };
  
  export default AppHeader;