* {
	margin: 0;
	padding: 0;
}

body {
	background: url(https://pic.imgdb.cn/item/6544696ac458853aef1d25a8.jpg);
}
.anniu{
	height: 40px;
	min-width: 130px;
	position: relative;
	top: 10px;
	left: 20px;
}
.anniu button {
	min-width: 130px;
	height: 40px;
	color: #fff;
	padding: 5px 10px;
	font-weight: bold;
	cursor: pointer;
	transition: all 0.3s ease;
	position: relative;
	display: inline-block;
	outline: none;
	border-radius: 5px;
	border: none;
	box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5), 7px 7px 20px 0px rgba(0,0,0,.1), 4px 4px 5px 0px rgba(0,0,0,.1);
	background: #57cc99;
   z-index: 1;
  }
  .anniu button:hover:after {
	width: 100%;
	left: 0;
  }
  .anniu button:after {
	border-radius: 5px;
	position: absolute;
	content: "";
	width: 0;
	height: 100%;
	top: 0;
	z-index: -1;
	box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5), 7px 7px 20px 0px rgba(0,0,0,.1), 4px 4px 5px 0px rgba(0,0,0,.1);
	transition: all 0.3s ease;
	background-color: #80ed99;
	right: 0;
  }
  .anniu button:active {
	top: 2px;
  }
.box {
	width: 320px;
	height: 200px;
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	margin: auto;
	transform-style: preserve-3d;
	animation: im 20s linear infinite;
}

.box img {
	width: 100%;
	height: 100%;
	position: absolute;
}

@keyframes im{
	0% {
		transform: rotateY(0deg) rotateX(10deg);
	}

	25% {
		transform: rotateY(90deg) rotateX(-10deg);
	}

	50% {
		transform: rotateY(180deg) rotateX(10deg);
	}

	75% {
		transform: rotateY(270deg) rotateX(-10deg);
	}

	100% {
		transform: rotateY(360deg) rotateX(10deg);
	}

}

/*10张图片3d变换*/
.box img:nth-child(1) {
	transform: rotateY(0deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(2) {
	transform: rotateY(36deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(3) {
	transform: rotateY(72deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(4) {
	transform: rotateY(108deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(5) {
	transform: rotateY(144deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(6) {
	transform: rotateY(180deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(7) {
	transform: rotateY(216deg) translateZ(600px);
	backface-visibility:visible;
}

.box img:nth-child(8) {
	transform: rotateY(252deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(9) {
	transform: rotateY(288deg) translateZ(600px);
	backface-visibility: visible;
}

.box img:nth-child(10) {
	transform: rotateY(324deg) translateZ(600px);
	backface-visibility: visible;
}