text: import React from 'react';
  import ReactDOM from 'react-dom';
  import './index.css';
  import Composition from './components/Composition';
  import * as serviceWorker from './serviceWorker';
  
  ReactDOM.render(
      <Composition 
          layout="2| . . 2- 2-"
          numRows={4}
          numColumns={2}>
          <div style={{backgroundColor: 'rgba(50, 255, 255, 0.8)'}}>
            1
          </div>
          <div style={{backgroundColor: 'rgba(255, 0, 255, 0.8)'}}>
            2
          </div>
          <div style={{backgroundColor: 'rgba(255, 50, 0, 0.8)'}}>
            3
          </div>
          <div style={{backgroundColor: 'rgba(50, 200, 50, 0.8)'}}>
            4
          </div>
          <div style={{backgroundColor: 'rgba(255, 165, 0, 0.8)'}}>
            5
          </div>
      </Composition>, 
      document.getElementById('root')
  );
  
  // If you want your app to work offline and load faster, you can change
  // unregister() to register() below. Note this comes with some pitfalls.
  // Learn more about service workers: https://bit.ly/CRA-PWA
  serviceWorker.unregister();
  