react-layer-stack/demo/src/index.js

Simple but ubiquitously powerful and agnostic layering system for React. Useful for any kind of windowing/popover/modals/tooltip application

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import './index.css';

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