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CSS

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HTML 

              
                mixin cuboid()
  .cuboid(class!=attributes.class)
    - let s = 0
    while s < 6
      .cuboid__side
      - s++
.scene
  .cloud.cloud--one
    .cloud__shift
      .cloud__body
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
  .cloud.cloud--two
    .cloud__shift
      .cloud__body
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
  .cloud.cloud--three
    .cloud__shift
      .cloud__body
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
        div
          +cuboid()(class="cuboid--cloud")
  .plane__floater
    .plane__looper
      .plane
        .plane__wheels
          .plane__axle
            +cuboid()(class="cuboid--axle")
          .plane__wheel.plane__wheel--left
            +cuboid()(class="cuboid--wheel-left")
          .plane__wheel.plane__wheel--right
            +cuboid()(class="cuboid--wheel-right")
        .plane__body
          +cuboid()(class="cuboid--body")
        .plane__nose
          +cuboid()(class="cuboid--nose")
        .plane__propellor
          .propellor
        .plane__screen
          +cuboid()(class="cuboid--screen")
        .plane__wings.wings
          .wings__top
            +cuboid()(class="cuboid--wings-top")
          .wings__ghost
            +cuboid()(class="cuboid--wings-ghost")
          .wings__bottom
            +cuboid()(class="cuboid--wings-bottom")
          .wings__strobe.wings__strobe--left
            +cuboid()(class="cuboid--strobe")
          .wings__strobe.wings__strobe--right
            +cuboid()(class="cuboid--strobe")
        .plane__tail
          +cuboid()(class="cuboid--tail")
        .plane__stabilizer.plane__stabilizer--horizontal
          +cuboid()(class="cuboid--horizontal-stabilizer")
        .plane__stabilizer.plane__stabilizer--vertical
          +cuboid()(class="cuboid--vertical-stabilizer")
        .plane__beacon
          +cuboid()(class="cuboid--beacon")
!

CSS 

              
                .cuboid
  width 100%
  height 100%
  position relative
  // 1 is the top and go t, r, b, l, f, b

  &__side:nth-of-type(1)
    height calc(var(--thickness) * 1vmin)
    width 100%
    position absolute
    top 0
    transform translate(0, -50%) rotateX(90deg)

  &__side:nth-of-type(2)
    height 100%
    width calc(var(--thickness) * 1vmin)
    position absolute
    top 50%
    right 0
    transform translate(50%, -50%) rotateY(90deg)

  &__side:nth-of-type(3)
    width 100%
    height calc(var(--thickness) * 1vmin)
    position absolute
    bottom 0
    transform translate(0%, 50%) rotateX(90deg)

  &__side:nth-of-type(4)
    height 100%
    width calc(var(--thickness) * 1vmin)
    position absolute
    left 0
    top 50%
    transform translate(-50%, -50%) rotateY(90deg)

  &__side:nth-of-type(5)
    height 100%
    width 100%
    transform translate3d(0, 0, calc(var(--thickness) * 0.5vmin))
    position absolute
    top 0
    left 0

  &__side:nth-of-type(6)
    height 100%
    width 100%
    transform translate3d(0, 0, calc(var(--thickness) * -0.5vmin)) rotateY(180deg)
    position absolute
    top 0
    left 0

*
*:after
*:before
  box-sizing border-box
  transform-style preserve-3d
  transition background 0.25s

body
  min-height 100vh
  display grid
  place-items center
  background var(--bg)
  overflow hidden

:root
  --dark 0
  --base-size 20
  --plane-height calc(var(--base-size) * 1vmin)
  --plane-width calc(var(--plane-height) * 1.6)
  --white-one 'hsl(0, 0%, %s)' % calc((90 - (var(--dark) * 30)) * 1%)
  --white-two 'hsl(0, 0%, %s)' % calc((85 - (var(--dark) * 30)) * 1%)
  --white-three 'hsl(0, 0%, %s)' % calc((80 - (var(--dark) * 30)) * 1%)
  --white-four 'hsl(0, 0%, %s)' % calc((75 - (var(--dark) * 30)) * 1%)
  --white-five 'hsl(0, 0%, %s)' % calc((70 - (var(--dark) * 30)) * 1%)
  --accent-hue 10
  --accent-one 'hsl(%s, 80%, %s)' % (var(--accent-hue) calc((60 - (var(--dark) * 20)) * 1%))
  --accent-two 'hsl(%s, 80%, %s)' % (var(--accent-hue) calc((55 - (var(--dark) * 20)) * 1%))
  --accent-three 'hsl(%s, 80%, %s)' % (var(--accent-hue) calc((50 - (var(--dark) * 20)) * 1%))
  --accent-four 'hsl(%s, 80%, %s)' % (var(--accent-hue) calc((45 - (var(--dark) * 20)) * 1%))
  --accent-five 'hsl(%s, 80%, %s)' % (var(--accent-hue) calc((40 - (var(--dark) * 20)) * 1%))
  --screen 'hsla(210, 80%, %s, 0.25)' % calc((70 - (var(--dark) * 20)) * 1%)
  --metal-one 'hsl(0, 0%, %s)' % calc((60 - (var(--dark) * 20)) * 1%)
  --metal-two 'hsl(0, 0%, %s)' % calc((50 - (var(--dark) * 20)) * 1%)
  --metal-three 'hsl(0, 0%, %s)' % calc((40 - (var(--dark) * 20)) * 1%)
  --wheel-one hsl(0, 0%, 10%)
  --wheel-two hsl(0, 0%, 5%)
  --wheel-three hsl(0, 0%, 0%)
  --wheel-hub 'hsl(0, 0%, %s)' % calc((98 - (var(--dark) * 20)) * 1%)
  --bg 'hsl(210, 80%, %s)' % calc((90 - (var(--dark) * 76)) * 1%)
  --night hsl(210, 80%, 16%)
  --cloud-one 'hsl(0, 0%, %s)' % calc((98 - (var(--dark) * 35)) * 1%)
  --cloud-two 'hsl(0, 0%, %s)' % calc((94 - (var(--dark) * 35)) * 1%)
  --cloud-three 'hsl(0, 0%, %s)' % calc((90 - (var(--dark) * 35)) * 1%)
  --cloud-four 'hsl(0, 0%, %s)' % calc((86 - (var(--dark) * 35)) * 1%)
  --cloud-five 'hsl(0, 0%, %s)' % calc((82 - (var(--dark) * 35)) * 1%)
  --cloud-six 'hsl(0, 0%, %s)' % calc((78 - (var(--dark) * 35)) * 1%)


.scene
  transform translate(-50%, -50%)
  position fixed
  top 50%
  left 50%
  transform translate3d(-50%, -50%, 100vmin) rotateX(-24deg) rotateY(44deg) rotateX(calc(var(--rotate-x, 0) * 1deg)) rotateY(calc(var(--rotate-y, 0) * 1deg))

.plane
  height var(--plane-height)
  width var(--plane-width)
  // background hsla(210, 80%, 80%, 0.5)
  position absolute
  top 50%
  left 50%
  transform translate(-50%, -50%)
  animation roll 10s infinite ease-out alternate

  &__floater
    position absolute
    width var(--plane-width)
    height var(--plane-width)
    transform translate(-50%, -50%)
    top 50%
    left 50%
    animation float 2s infinite ease-in-out

  &__looper
    position absolute
    width var(--plane-width)
    height var(--plane-width)
    transform translate(-50%, -50%)
    top 50%
    left 50%
    transform-origin 50% 0
    animation loop 10s infinite ease-in-out

  *
    position absolute

  &__body
    height 40%
    width 36%
    bottom 20%
    left 10%

  &__wheels
    bottom 0
    width calc(var(--plane-height) * 0.2)
    left 32%
    transform translate(-50%, 0)
    height 20%

  &__axle
    height 50%
    width 50%
    top 50%
    left 50%
    transform translate(-50%, -50%)

  &__wheel
    height 100%
    width 100%
    top 0
    left 0

  &__wings
    height 70%
    width 40%
    bottom 19%
    left 12%

  &__tail
    height 40%
    width 54%
    bottom 20%
    left 46%

  &__nose
    height 30%
    width 10%
    bottom 25%

  &__stabilizer--horizontal
    height 9%
    width 16%
    right 1%
    bottom 50%

  &__screen
    bottom 60%
    left 30%
    width 6%
    height 14%

  &__propellor
    height calc(var(--base-size) * 0.75vmin)
    width calc(var(--base-size) * 0.75vmin)
    left -1%
    bottom 40%
    transform translate(-50%, 50%) rotateY(-90deg)

    &:after
      content ''
      position absolute
      top 50%
      left 50%
      transform translate3d(-50%, -50%, 2px)
      height 16%
      width 16%
      border-radius 50%
      background var(--white-one)

  &__stabilizer--vertical
    height 20%
    width 20%
    right 0
    bottom 60%

  &__beacon
    right 1%
    bottom 80%
    height 2%
    width 2%

  &__wheel--left
    transform translate3d(0, 0, calc(var(--base-size) * 0.3vmin))
  &__wheel--right
    transform translate3d(0, 0, calc(var(--base-size) * -0.3vmin))

.propellor
  height 100%
  width 100%
  animation spin 0.35s infinite linear

  &:after
  &:before
    content ''
    height 100%
    width 10%
    position absolute
    top 50%
    left 50%
    background linear-gradient(transparent 0 5%, var(--accent-two) 5% 15%, transparent 15% 85%, var(--accent-two) 85% 95%, transparent 95%), hsl(0, 0%, 0%)
    transform translate(-50%, -50%) rotate(calc(var(--r, 45) * 1deg))

  &:after
    --r -45

.wings
  &__ghost
    height 80%
    width 80%
    left 50%
    bottom 10%
    transform translate(-50%, 0)

  &__top
    top 0
    height 10%
    width 100%
    left 0

  &__bottom
    bottom 0
    height 10%
    width 100%
    left 0

  &__strobe
    bottom 10%
    height 4%
    width 4%
    left 50%

    &--left
      transform translate3d(-50%, 0, calc(var(--base-size) * 1vmin))
    &--right
      transform translate3d(-50%, 0, calc(var(--base-size) * -1vmin))

.cloud
  height 10vmin
  width 15vmin
  position absolute
  top 50%
  left 50%
  transform translate(-50%, -50%)

  &__shift
    height 100%
    width 100%
    animation pan calc(var(--speed, 5) * 1s) calc(var(--delay, 5) * -1s) infinite ease-in-out both

  &__body
    height 100%
    width 100%
    animation scale calc(var(--speed, 5) * 1s) calc(var(--delay, 5) * -1s) infinite linear

  &__body > div
    position absolute

    &:nth-of-type(1)
      bottom 0
      left 25%
      width 60%
      height 90%
      --thickness calc(var(--base-size) * 0.2)

    &:nth-of-type(2)
      bottom 0
      left 0
      width 50%
      height 60%
      --thickness calc(var(--base-size) * 0.3)

    &:nth-of-type(3)
      bottom 0
      right 0%
      width 60%
      height 40%
      --thickness calc(var(--base-size) * 0.4)

  &--one
    --speed 2
    --delay 3
    transform translate(-50%, -50%) translate3d(-40vmin, 20vmin, 26vmin)

  &--two
    --speed 4
    --delay 1
    transform translate(-50%, -50%) translate3d(30vmin, -15vmin, -34vmin)

  &--three
    --speed 6
    --delay 2
    transform translate(-50%, -50%) translate3d(50vmin, 35vmin, -14vmin)

.cuboid
  &--body
    --thickness calc(var(--base-size) * 0.4)
    div
      background var(--white-two)

      &:nth-of-type(1)
        background var(--white-one)
      &:nth-of-type(2)
        background var(--white-two)
      &:nth-of-type(3)
        background var(--white-three)
      &:nth-of-type(4)
        background var(--white-four)

      &:nth-of-type(5):after
      &:nth-of-type(6):after
        content ''
        position absolute
        top 50%
        left 50%
        height calc(var(--base-size) * 0.25vmin)
        width calc(var(--base-size) * 0.25vmin)
        background-image url("https://assets.codepen.io/605876/avatar.png")
        background-size cover
        filter saturate(0.65)
        transform translate3d(-50%, -50%, 1px)

  &--screen
    --thickness calc(var(--base-size) * 0.26)

    div
      background var(--screen)

  &--tail
    --thickness calc(var(--base-size) * 0.3)

    div
      background var(--white-two)

      &:nth-of-type(1)
        background var(--white-one)

        &:after
          content ''
          position absolute
          height 74%
          width 50%
          background var(--metal-three)
          top 50%
          right 50%
          transform translate3d(-50%, -50%, 1px)

      &:nth-of-type(2)
        background linear-gradient(var(--white-two) 0 30%, transparent 30%)

      &:nth-of-type(3)
        background linear-gradient(90deg, var(--white-two) 0 20%, transparent 20%)

        &:after
          content ''
          position absolute
          background var(--white-four)
          top 0%
          left 20%
          height 100%
          width 87%
          transform-origin 0 50%
          transform rotateY(-22deg)

      &:nth-of-type(5)
        background transparent
        overflow hidden

        &:after
          content ''
          position absolute
          bottom 70%
          height 100%
          width 100%
          background var(--white-two)
          transform-origin 100% 100%
          transform rotate(-22deg) scale(2) translate(10%, 0)

      &:nth-of-type(6)
        background transparent
        overflow hidden

        &:after
          content ''
          position absolute
          bottom 70%
          height 100%
          width 100%
          background var(--white-two)
          transform-origin 0% 100%
          transform rotate(22deg) scale(2) translate(-10%, 0)

  &--nose
    --thickness calc(var(--base-size) * 0.3)

    div
      background var(--metal-three)

      &:nth-of-type(1)
        background var(--metal-one)
      &:nth-of-type(2)
        background var(--metal-two)
      &:nth-of-type(3)
        background var(--metal-one)

  &--wings-ghost
  &--wings-top
  &--wings-bottom
    --thickness calc(var(--base-size) * 2.2)

    div
      background var(--accent-one)

      &:nth-of-type(1)
        background var(--accent-two)
      &:nth-of-type(2)
      &:nth-of-type(5)
        background var(--accent-three)
      &:nth-of-type(4)
        background var(--accent-four)
      &:nth-of-type(3)
        background var(--accent-five)

  &--wings-ghost
    div
      &:nth-of-type(3)
      &:nth-of-type(5)
      &:nth-of-type(6)
      &:nth-of-type(1)
        background transparent
      &:nth-of-type(2)
      &:nth-of-type(4)
        background linear-gradient(90deg, transparent 0 5%, var(--metal-one) 5% 7%, transparent 7% 33%, var(--metal-one) 33% 35%, transparent 35% 65%, var(--metal-one) 65% 67%, transparent 67% 93%, var(--metal-one) 93% 95%, transparent 95%)

  &--axle
    --thickness calc(var(--base-size) * 0.5)

    div
      background var(--metal-two)

      &:nth-of-type(3)
        background var(--metal-three)
      &:nth-of-type(2)
      &:nth-of-type(1)
        background var(--metal-one)
      &:nth-of-type(6)
        background var(--metal-one)

  &--horizontal-stabilizer
    --thickness calc(var(--base-size) * 0.65)

    div
      background var(--accent-one)

      &:nth-of-type(1)
        background var(--accent-two)
      &:nth-of-type(2)
      &:nth-of-type(5)
        background var(--accent-three)
      &:nth-of-type(3)
      &:nth-of-type(4)
        background var(--accent-four)

  &--vertical-stabilizer
    --thickness calc(var(--base-size) * 0.2)

    div
      background var(--accent-one)

      &:nth-of-type(1)
        background linear-gradient(270deg, var(--accent-two) 0 30%, transparent 30%)

      &:nth-of-type(4)
        background transparent

        &:after
          content ''
          background var(--accent-four)
          height 150%
          bottom 0
          left 0
          position absolute
          width 100%
          transform-origin 50% 100%
          transform rotateX(-48deg)

      &:nth-of-type(5)
        background transparent
        overflow hidden

        &:after
          content ''
          position absolute
          top 100%
          transform-origin 0 0
          transform rotate(-42deg)
          background var(--accent-three)
          height 150%
          width 160%

      &:nth-of-type(6)
        background transparent
        overflow hidden

        &:after
          content ''
          position absolute
          top 100%
          right 0
          transform-origin 100% 0
          transform rotate(42deg)
          background var(--accent-three)
          height 150%
          width 160%

  &--wheel-left
  &--wheel-right
    --thickness calc(var(--base-size) * 0.1)

    div
      background var(--wheel-one)

      &:nth-of-type(1)
      &:nth-of-type(2)
      &:nth-of-type(4)
        background var(--wheel-two)
      &:nth-of-type(3)
        background var(--wheel-three)

      &:nth-of-type(5)
      &:nth-of-type(6)
        &:after
          content ''
          position absolute
          top 50%
          left 50%
          transform translate(-50%, -50%)
          height 40%
          width 40%
          background var(--wheel-hub)
  &--cloud
    div
      &:nth-of-type(1)
        background var(--cloud-one)
      &:nth-of-type(2)
        background var(--cloud-two)
      &:nth-of-type(3)
        background var(--cloud-three)
      &:nth-of-type(4)
        background var(--cloud-four)
      &:nth-of-type(5)
        background var(--cloud-five)
      &:nth-of-type(6)
        background var(--cloud-six)

  &--beacon
    --thickness calc(var(--base-size) * 0.02)
    animation flash calc(var(--dark) * 1s) infinite

    div
      background 'hsla(0, 90%, 50%, %s)' % var(--alpha)

  &--strobe
    --thickness calc(var(--base-size) * 0.02)
    animation flash calc(var(--dark) * 0.5s) infinite

    div
      background 'hsla(0, 90%, 98%, %s)' % var(--alpha)

@keyframes flash
  50%
    --alpha 1

@keyframes spin
  to
    transform rotate(360deg)

@keyframes float
  50%
    transform translate(-50%, -40%)

@keyframes loop
  0%, 40%
    transform translate(-50%, -50%)
  50%, 100%
    transform translate(-50%, -50%) rotateZ(360deg)

@keyframes roll
  0%, 85%
    transform translate(-50%, -50%)
  90%, 100%
    transform translate(-50%, -50%) rotateX(-360deg)

@keyframes nightshift
  0%, 50%
    background var(--bg)
  75%, 100%
    background var(--night)

@keyframes scale
  0%, 5%, 95%, 100%
    transform scale(0)
  10%, 90%
    transform scale(1)

@keyframes pan
  0%
    transform translate(-1000%, 0)
  100%
    transform translate(1000%, 0)
!

JS 

              
                import gsap from 'https://cdn.skypack.dev/gsap'

const BOUNDS = 50
document.addEventListener('pointermove', ({ x, y }) => {
  const newX = gsap.utils.mapRange(0, window.innerWidth, -BOUNDS, BOUNDS, x)
  const newY = gsap.utils.mapRange(0, window.innerHeight, BOUNDS, -BOUNDS, y)
  gsap.set(document.documentElement, {
    '--rotate-x': newY,
    '--rotate-y': newX,
  })
})

let CHECKED = false
document.addEventListener('pointerdown', e => {
  CHECKED = !CHECKED
  document.documentElement.style.setProperty('--dark', CHECKED ? 1 : 0)
})
!
999px

Console