Implement a single HTML app. Use minimum browser default css to establish layout. Focus on canvas content and javascript code.
Import Three.js from a CDN like this:
<script type="module">
import * as THREE from 'https://esm.sh/[email protected]/build/three.module.js';
import { OrbitControls } from 'https://esm.sh/[email protected]/examples/jsm/controls/OrbitControls.js';
</script>
Respond in ```html code block