text: import React from 'react';
  import {
    BrowserRouter as Router,
    Switch,
    Route,
    Link
  } from 'react-router-dom';
  
  import './app.css';
  import Products from '../products/products'
  import Product from '../product/product'
  import Header from '../header/header'
  
  class App extends React.Component {
    render() {
      return (
        <Router>
          <div id="app" className="App container-lg main_container">
            <Header />
            <Switch>
              <Route path="/product/:productId">
                <Product />
              </Route>
              <Route path="/products">
                <Products />
              </Route>
              <Route path="/">
                <Link to="/products">See Products!</Link>
              </Route>
            </Switch>
          </div>
        </Router>
      );
    }
  }
  
  export default App;
  