* {
  box-sizing: border-box;
}

body {
   background: rgba(167, 162, 162, 1.0);
background: radial-gradient(ellipse at center, rgba(167, 162, 162, 1.0), rgba(255, 255, 255, 1.0));
  overflow: hidden;
}

div {
  display: block;
}

.cube {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 180px;
  height: 180px;
  transform: translateZ(100px);
  transform-style: preserve-3d;
  height: 100vh;
}

.cube__side {
  position: absolute;
  width: 200px;
  height: 200px;
  border: 2px solid black;
}

img {
  width: 100%;
  height: 100%;
  border: 6px solid #f2f2f2;
  filter: saturate(1.5);
  opacity: 0.8;
}

.cube__side--front {
  transform: rotateY(0deg) translateZ(100px);
}

.cube__side--right {
  transform: rotateY(90deg) translateZ(100px);
}

.cube__side--back {
  transform: rotateY(180deg) translateZ(100px);
}

.cube__side--left {
  transform: rotateY(-90deg) translateZ(100px);
}

.cube__side--top {
  transform: rotateX(90deg) translateZ(100px);
}

.cube__side--bottom {
  transform: rotateX(-90deg) translateZ(100px);
}

.cube.spin {
  animation: spinning 7s infinite ease-in-out;
}

.cube--base {
  margin: 0 auto;
}

@keyframes spinning {

  0% {
    transform: translateZ(180px) rotateX(0deg) rotateY(0deg);
  }
  100% {
    transform: translateZ(180px) rotateX(360deg) rotateY(360deg);
  }
}