* {
	margin: 0;
	padding: 0;
}
body {
	background: url(https://pic.imgdb.cn/item/654b9c11c458853aefa8cc96.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: 1000px;
	margin: 0px auto;
	margin-top: 100px;
}
.box img {
	width: 320px;
	height: 180px;
	border: 5px solid azure;
	box-shadow: -10px -10px 10px black;
	transition: all 0.3s linear;
}

img:nth-child(odd) {
	transform: rotate(20deg);
}

img:nth-child(even) {
	transform: rotate(-20deg);
}

img:hover {
	transform: scale(1.3);
	position: relative;
	z-index: 2;
}