/* 设置背景为天空蓝 */
			body{
				background-color: skyblue;
			}
			/* 设置长宽为250px */
			#box2{
				border: 2px solid white;
				height: 250px;
				width: 250px;
				/* 以浏览器定位 */
				position: fixed;
				left: calc(50% - 125px);
				top: calc(50% - 125px);
				/* 变成3D */
				transform-style: preserve-3d;
				transform: rotateX(10deg) rotateY(10deg);
				}
				/* 设置外面盒子大小 */
				#box2>img{
					width: 100%;
					height: 100%;
					/* 绝对定位，以外面box2的标准来 */
					position: absolute;
					left: 0px;
					top: 0px;
					/* 阴影 */
					box2-shadow: 0px 0px 20px 10px white;
                 }
				 #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(270deg) translateZ(125px);
				 }
				 #box2>img:nth-child(6){
				 	transform: rotateX(90deg) translateZ(125px);
				 }
				 /* 前6张设置变透明 */
				 #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(0.5,0.50.5) 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(270deg) translateZ(125px);
				 }
				 #box2>img:nth-child(12){
				 	transform: scale3d(0.5,0.5,0.5) rotateX(90deg) translateZ(125px);
				 }