*{
	margin: 0;
	padding: 0;
}
body,html{
	width: 100%;
	height: 100%;
}
.center{
	width: 100%;
	height: 100%;
	background: url(../imgs/beijing.png) no-repeat;
	background-size: 100%;
	position: relative;
	overflow: hidden;
	position: fixed;
}
.center>img:nth-child(1){
	position: absolute;
	right: 50px;
	top: 30px;
	animation: bounceInDown 1s .5s forwards;
	opacity: 0;
}
.center>img:nth-child(2){
	display: block;
	margin: 0px auto;
	position: relative;
	top: 120px;
	width: 35%;
	opacity: 0;
	animation: bounceIn 1s 1s forwards;
}
.center>img:nth-child(3){
	display: block;
	margin: 0px auto;
	position: relative;
	top: 130px;
	width: 30%;
	opacity: 0;
	animation: lightSpeedIn 1s 1.5s forwards;
}
.center>img:nth-child(4){
	width: 100%;
	position: absolute;
	opacity: 0;
	animation: fadeIn 1s 2s forwards;
}
.center>img:nth-child(5){
	width: 100%;
	position: absolute;
	right: -200px;
	bottom: -50px;
	opacity: 0;
	animation: zoomInRight 1s 2.5s forwards;
}
.center>a>img{
	width: 14%;
	position: absolute;
	right: 11%;
	bottom: 120px;
	opacity: 0;
	animation: tada 1s 3s infinite;
}