/* 定义一个动画 */
@keyframes box-ani2 {
	from {
		transform: rotateX(-10deg) rotateY(0deg);
	}

	to {
		transform: rotateX(-10deg) rotateY(360deg);
	}
}

body {
	background-color: black;
}

#box2 {
	/* 设置边框 */
	height: 250px;
	width: 250px;
	border: none;/* 2px solid white */;
	/* 固定定位，以浏览器为标准进行定位 */
	position: fixed;
	/* 左负右正，上负下正 */
	left: calc(50% - 125px);
	top: calc(50% - 125px);
	/* 把盒子变成3D的盒子 */
	transform-style: preserve-3d;
	transform: rotateX(10deg) rotateY(10deg);
	animation-name: box-ani2;
	animation-duration: 20s;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
	/* 设置动画默认暂停 */
	animation-play-state: paused;
}

#box2>img {
	width: 100%;
	height: 100%;

	position: absolute;
	left: 0px;
	top: 0px;
	/* box-shadow: 10px -20px 20px 10px pink; */
}

#box2>img:nth-child(1) {
	transform: translateZ(125px);
}

#box2>img:nth-child(2) {
	transform: rotateY(180deg) translateZ(125px);
}

#box2>img:nth-child(3) {
	transform: rotateY(90deg) translateZ(125px);
}

#box2>img:nth-child(4) {
	transform: rotateY(270deg) translateZ(125px);
}

#box2>img:nth-child(5) {
	transform: rotateX(90deg) translateZ(125px);
}

#box2>img:nth-child(6) {
	transform: rotateX(270deg) translateZ(125px);
}

#box2>img:nth-child(-n+6) {
	opacity: 0.4;
}

#box2>img:nth-child(7) {
	transform: scale3d(0.5, 0.5, 0.5) translateZ(125px);
}

#box2>img:nth-child(8) {
	transform: scale3d(0.5, 0.5, 0.5) rotateY(180deg) translateZ(125px);
}

#box2>img:nth-child(9) {
	transform: scale3d(0.5, 0.5, 0.5) rotateY(90deg) translateZ(125px);
}

#box2>img:nth-child(10) {
	transform: scale3d(0.5, 0.5, 0.5) rotateY(270deg) translateZ(125px);
}

#box2>img:nth-child(11) {
	transform: scale3d(0.5, 0.5, 0.5) rotateX(90deg) translateZ(125px);
}

#box2>img:nth-child(12) {
	transform: scale3d(0.5, 0.5, 0.5) rotateX(270deg) translateZ(125px);
}