body{font-size:10px;perspective:180px;overflow:hidden;margin:0;}#app{width:90vw;height:90vh;transform-style:preserve-3d;animation:rot 5s linear infinite normal;}#app div{position:absolute;left:50%;top:50%;margin:0 auto;width:100vw;height:100vh;}@keyframes rot{100%{transform:rotateY(0.5turn);}}