.about{
	width: 100%;
	height: auto;
	overflow: hidden;
	margin: 0px auto;
	font-size: 16px;
	cursor: pointer;
}
.about:hover{
opacity: 0.9;

}
.about .about_y{
	width: 1200px;
	height: auto;
	margin: 0px auto;
}
.about .about_y .about_xq{
	width: 100%;
	height: auto;
	float: left;
	transition: all 1s;
	position:relative;
	animation:myfirst 8s;
	-webkit-animation:myfirst 4s; 
}
.about .about_y .about_xq h3{
	font-size: 24px;
	padding: 1em ;
}
.about .about_y .about_xq .about_nr{
	width: 80%;
	height: auto;
	margin: 0px auto;
	overflow: hidden;
	padding-bottom: 3em
}
.about .about_y .about_xq .about_nr ul li{
	width: 40%;
	height: 220px;
	float: left;
	overflow: hidden;
	border: 1px solid #ccc;
	padding: 1em 0;
	margin: 2em 3em;
}
.about .about_y .about_xq .about_nr ul li img{
	width: 100%;
	height: auto;
}
.about .about_y .about_xq .about_nr ul li p{
	text-align: center;
}
.about .about_y .about_xq .about_nr ul li:hover{
	color: #f90;
	border: 1px solid #f90;
}