text: import React from 'react';
  import {BrowserRouter, Route, IndexRoute, Switch, Link, NavLink} from 'react-router-dom';
  
  import Header from './Header';
  import Nav from './Nav';
  import Footer from './Footer';
  import Main from './Main';
  
  
  
  // render on page
  export default class Layout extends React.Component {
      render() {        
          return (
              <div>
                  <Header />
                  <Nav />
                  <Main />       
              </div>
          )
      }
  };