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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML
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CSS 

              
                body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    background: #F5F9FC;
}
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JS 

              
                const { timeline, to } = gsap

const width = 80
const height = 80

let renderer = new THREE.WebGLRenderer({
    antialias: true,
    alpha: true
})

renderer.setSize(width, height)
renderer.setPixelRatio(2)
renderer.shadowMap.enabled = true
renderer.shadowMap.type = THREE.PCFSoftShadowMap

document.querySelector('body').appendChild(renderer.domElement)

const scene = new THREE.Scene()
const camera = new THREE.PerspectiveCamera(50, width / height, 0.1, 1000)

camera.position.z = 300

const rectangle = (ctx, x, y, width, height, radius) => {
    ctx.moveTo(x, y + radius)
    ctx.lineTo(x, y + height - radius)
    ctx.quadraticCurveTo(x, y + height, x + radius, y + height)
    ctx.lineTo(x + width - radius, y + height)
    ctx.quadraticCurveTo(x + width, y + height, x + width, y + height - radius)
    ctx.lineTo(x + width, y + radius)
    ctx.quadraticCurveTo(x + width, y, x + width - radius, y)
    ctx.lineTo(x + radius, y)
    ctx.quadraticCurveTo(x, y, x, y + radius)
}

const rectangleReverse = (ctx, x, y, width, height, radius) => {
    ctx.moveTo(x, y + height - radius)
    ctx.lineTo(x, y + radius)
    ctx.quadraticCurveTo(x, y, x + radius, y)
    ctx.lineTo(x + width - radius, y)
    ctx.quadraticCurveTo(x + width, y, x + width, y + radius)
    ctx.lineTo(x + width, y + height - radius)
    ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height)
    ctx.lineTo(x + radius, y + height)
    ctx.quadraticCurveTo(x, y + height, x, y + height - radius)
}

let rect = new THREE.Shape()
rectangle(rect, -72, -72, 144, 144, 66)
var rectSmall = new THREE.Path()
rectangleReverse(rectSmall, -60, -60, 120, 120, 52)
rect.holes.push(rectSmall)

let shape = new THREE.ExtrudeBufferGeometry(rect, {
    curveSegments: 24,
    depth: 8,
    bevelEnabled: true,
    bevelSegments: 10,
    steps: 10,
    bevelSize: 4,
    bevelThickness: 4
})

const geometry = new THREE.Geometry()
geometry.fromBufferGeometry(shape)
geometry.mergeVertices()
geometry.center()

let material = new THREE.MeshPhongMaterial({
    color: 0x008FFD,
    shininess: 25
})
let donut = new THREE.Mesh(geometry, material)

donut.castShadow = true
donut.receiveShadow = true

scene.add(donut)

let planeGeometry = new THREE.PlaneGeometry(200, 200),
    planeMaterial = new THREE.ShadowMaterial({ opacity: .04 })

const plane = new THREE.Mesh(planeGeometry, planeMaterial)
plane.position.z = -80
plane.receiveShadow = true
scene.add(plane)

const lightFront = new THREE.DirectionalLight(0xFFFFFF, .5)
lightFront.position.set(0, 50, 300)
lightFront.castShadow = true

const d = 200
lightFront.shadow.camera.left = -d
lightFront.shadow.camera.right = d
lightFront.shadow.camera.top = d
lightFront.shadow.camera.bottom = -d

lightFront.shadow.mapSize.width = 512
lightFront.shadow.mapSize.height = 512

const lightTop = new THREE.DirectionalLight(0xFFFFFF, .5)
lightTop.position.set(0, 400, 40)

scene.add(lightFront)
scene.add(lightTop)

scene.add(new THREE.AmbientLight(0x0184fa))

// function twist(geometry, amount, axis) {
//     const quaternion = new THREE.Quaternion()
//     for(let i = 0; i < geometry.vertices.length; i++) {
//         quaternion.setFromAxisAngle(new THREE.Vector3(axis == 'x' ? 1 : 0, axis == 'y' ? 1 : 0, 0), geometry.vertices[i][axis] * amount)
//         geometry.vertices[i].applyQuaternion(quaternion)
//     }
//     geometry.verticesNeedUpdate = true
// }

to(donut.rotation, {
    repeat: -1,
    keyframes: [{
        x: THREE.Math.degToRad(180),
        duration: 1,
        ease: 'power1.inOut'
    }, {
        y: THREE.Math.degToRad(-180),
        duration: 1,
        ease: 'power1.inOut'
    }]
})

// geometry.lastDegreeX = 0
// geometry.lastDegreeY = 0
// geometry.degreeX = 0
// geometry.degreeY = 0

// to(geometry, {
//     duration: 2,
//     repeat: -1,
//     ease: 'none',
//     keyframes: [{
//         degreeX: .005
//     }, {
//         degreeX: 0
//     }, {
//         degreeY: .005
//     }, {
//         degreeY: 0
//     }],
//     onUpdate() {
//         let x = gsap.getProperty(this.targets()[0], 'degreeX'),
//             y = gsap.getProperty(this.targets()[0], 'degreeY')

//         twist(geometry, x - geometry.lastDegreeX, 'x')
//         twist(geometry, y - geometry.lastDegreeY, 'y')

//         geometry.lastDegreeX = x
//         geometry.lastDegreeY = y
//     }
// })

const render = () => {
    renderer.render(scene, camera)
    
    requestAnimationFrame(render)
}

render()
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999px

Console