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

			/* #box相当于id="box" */
			#box2 {
				/* 设置边框 */
				border: 2px 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);
				/* 把盒子变成一个3D的盒子 */
				transform-style: preserve-3d;
				transform: rotateX(10deg) rotateY(10deg);
				
				
			}

			/* 照片大小 */
			#box2>img {
				width: 100%;
				height: 100%;
				/* 绝对定位，以BOX2为标准进行定位 */
				position: absolute;
				left: 0px;
				top: 0px;
				box-shadow: 0px 0px 20px 10px white;
				}
			
			#box2>img:nth-child(1){
				transform:  translateZ(125px);
			}
			/* 第二张图片 */
			#box2>img:nth-child(2){
				transform: rotateY(180deg) translateZ(125px);
			}
			#box2>img:nth-child(3){
				transform: rotateY(270deg) translateZ(125px);
			}
			#box2>img:nth-child(4){
				transform: rotateY(90deg) translateZ(125PX);
			}
			#box2>img:nth-child(5){
				transform: rotateX(90deg) translateZ(125px);
			}
			#box2>img:nth-child(6){
				transform: rotateX(270deg) translateZ(125px);
			}
			/*将图片设置透明度*/
			#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(270deg) translateZ(125px);
			}
			#box2>img:nth-child(10){
				transform:scale3d(0.5,0.5,0.5) rotateY(90deg) 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);
			}