Update index.html

public/index.html

@@ -35,7 +35,7 @@ async function activateXR() {
   const material = new THREE.MeshPhysicalMaterial({ color: 0xC70039, roughness: 0.5, metalness: 0.5, clearcoat: 1.0, clearcoatRoughness: 0.1 });
 
   // Create the tetrahedron and add it to the demo scene.
-  const tetrahedron = new THREE.Mesh(new THREE.TetrahedronGeometry(0.7), material);
+  const tetrahedron = new THREE.Mesh(new THREE.TetrahedronGeometry(0.5), material);
   
   // Position the tetrahedron
   tetrahedron.position.set(0, 0, -1);