<div class="container">
      <div class="cube">
        <div class="front side"></div>
        <div class="back side"></div>
        <div class="left side"></div>
        <div class="right side"></div>
        <div class="top side"></div>
        <div class="bottom side"></div>
      </div>

body {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.container {
  width: 400px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 800px;
}
.cube {
  position: relative;
  width: 200px;
  height: 200px;
  transform-style: preserve-3d;
  transform: translateZ(-100px);
  transition: transform 1s;
  animation: cubeRotate 10s linear infinite;
}
.cube > div {
  position: absolute;
  width: 200px;
  height: 200px;
  opacity: 0.8;
}
@keyframes cubeRotate {
  0% {
    transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg);
  }
  25% {
    transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg);
  }
  50% {
   transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg);
  }
  75% {
    transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg);
  }
  100% {
  transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg);
  }
}
.cube .front-view {
  transform: translateZ(-100px);
}
.cube .back-view {
  transform: translateZ(100px);
}
.cube .left-view {
  transform: translateZ(-100px) rotateY(-90deg);
}
.cube .right-view {
  transform: translateZ(-100px) rotateY(90deg);
}
.cube .top-view {
  transform: rotateX(90deg) translateY(100px);
}
.cube .bottom-view {
  transform: rotateX(-90deg) translateY(100px);
}
.side {
  position: absolute;
  width: 500px;
  height: 500px;
}
.front.side {
  background-color: pink;
  transform: translateZ(100px);
}
.back.side {
  background-color: blue;
  transform: translateZ(-100px);
}
.left.side {
  background-color: yellow;
  transform: rotateY(90deg) translateZ(100px);
}
.right.side {
  background-color: aqua;
  transform: rotateY(-90deg) translateZ(100px);
}
.top.side {
  background-color: green;
  transform: translateY(-100px) rotateX(-90deg);
}
.bottom.side {
  transform: translateY(-100px) rotateX(90deg);
}