beautiful-cube/style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

::selection {
  background-color: orangered;
  color: white;
}

body {
  background-color: #222;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
  color: orangered;
}

h1 {
  position: fixed;
  top: 10px;
}

#wrapper {
  perspective: 600px;
}

.cube {
  width: 200px;
  height: 200px;
  transform-style: preserve-3d;
  animation: rotateCube 6s infinite linear;
}

.face {
  position: absolute;
  width: 200px;
  height: 200px;
  border: 2px solid orangered;
  text-align: center;
  padding-top: 50%;
  font-size: 20px;
  transition: background-color 1s, color 1s;
}
.face:hover {
  background-color: orangered;
  color: white;
}

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

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

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

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

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

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

@keyframes rotateCube {
  0% {
    transform: rotateX(0deg);
  }

  100% {
    transform: rotateX(360deg) rotateY(360deg);
  }
}