class App extends React.Component {
  render() {
    return (
      <div>
        <BannerTop />

        <h1>Lorem ipsum</h1>
        <Navigation />
        <Switch>
          <Route path='/o-nas' strict exact component={AboutUs} />
          <Route path='/' strict exact component={Home} />
          <Redirect to='/' />
        </Switch>
      </div>
    );
  }
}

class BannerTop extends Component {
  state = {};
  render() {
    return (
      <section className={this.changeClass()} id='banner-top'>
        <div className='container'> Lorem </div>
      </section>
    );
  }

  changeClass = () => {
    console.log(this.props.location);
    return window.location.pathname === '/' ? 'home' : 'other';
  };
}