text: import React, { Component } from 'react'
  
  import NavBar from './NavBar'
  import NavBar2 from './NavBar2'
  
  export default class App extends Component {
    render() {
      return (
        <div>
          <NavBar>
            <span>aaa</span>
            <strong>bbb</strong>
            <a href="/#">ccc</a>
          </NavBar>
          <NavBar2 leftSlot={<span>aaa</span>}
            centerSlot={<strong>bbb</strong>}
            rightSlot={<a href="/#">ccc</a>} />
        </div>
      )
    }
  }
  