velopert1.js

class Codelab extends React.Component {
  render() {
    let text = "Hi I am codelab";
    let stylegg = {
      backgroundColor: 'aqua'
    };
    
    return (
      <div style={stylegg}>{text}</div>
    );
  }
}

class App extends React.Component {
  render() {
    return (
      <Codelab/>
    );
  }
}

ReactDOM.render(<App/>,document.getElementById('root'));