Basic React Router app

App.js

import React from 'react'
import './App.css'
import { BrowserRouter as Router, Route, Link } from 'react-router-dom'

function Home () {
  return (
    <div>
      <h1>Home</h1>
    </div>
  )
}

function Todos() {
  return (
    <div>
      <h1>Todos</h1>
    </div>
  )
}

function About() {
  return (
    <div>
      <h1>About</h1>
    </div>
  )
}

function App () {
  return (
    <Router>
      <div className="App">
        <nav className="App-nav">
          <Link to="/">Home</Link>
          <Link to="/todos">Todos</Link>
          <Link to="/about">About</Link>
        </nav>
        <hr />
        <Route exact path="/" component={Home} />
        <Route path="/todos" component={Todos} />
        <Route path="/about" component={About} />
      </div>
    </Router>
  )
}

export default App