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<!DOCTYPE html>
<html>
<head>
  <title>Three.js Scene and Animation Example</title>
  <style>
    body {
      margin: 0;
      padding: 0;
    }
    canvas {
      display: block;
    }
  </style>
</head>
<body>
  <script src="https://threejs.org/build/three.min.js"></script>
  <script>
    // Set up the scene, camera, and renderer
    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);

    // Create a cube geometry and material
    const geometry = new THREE.BoxGeometry();
    const material = new THREE.MeshBasicMaterial({ color: 0xffffff });

    // Create a cube mesh and add it to the scene
    const cube = new THREE.Mesh(geometry, material);
    scene.add(cube);

    // Set up animation loop
    const animate = function () {
      requestAnimationFrame(animate);

      // Rotate the cube
      cube.rotation.x += 0.01;
      cube.rotation.y += 0.01;

      renderer.render(scene, camera);
    };

    // Start the animation loop
    animate();

    // Adjust camera position
    camera.position.z = 5;
  </script>
</body>
</html>