<script type="module">

    import * as THREE from 'https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.module.js';

    const scene = new THREE.Scene();
    const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );

    const renderer = new THREE.WebGLRenderer();
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );

    const geometry = new THREE.BoxGeometry();
    const material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
    const cube = new THREE.Mesh( geometry, material );

    scene.add( cube );
    camera.position.z = 5;

    function animate() {
        requestAnimationFrame( animate );
        renderer.render( scene, camera );
    }
    animate();

    setInterval(function(){
        cube.rotation.x += 0.01;
        cube.rotation.y += 0.01;
    }, 5);

</script>

body{
    margin:0px;       
}