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

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

body {
	/*背景为 色*/
	background-color: black;
}

/*#box相当于id=“box”*/
#box2 {
	border: 0px solid white;
	height: 250px;
	width: 250px;
	/*固定定位，以浏览器为标准进行定位*/
	position: fixed;
	left: calc(50% - 125px);
	top: calc(50% - 125px);
	transform-style: preserve-3d;
	transform: rotateX(-10deg) rotateY(10deg);
	/* 使用刚刚定义好的动画*/
	animation-name: box-ani;
	animation-duration: 6s;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
	animation-play-state: paused;

}

#box2>img {
	width: 100%;
	height: 100%;
	position: absolute;
	left: 0px;
	top: 0px;
}

#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(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);
}

/*前六张照片透明度*/
#box2>img:nth-child(-n+6) {
	opacity: 0.4;
}