*{
	margin: 0px;
	padding: 0px;
	font-family: "微软雅黑";
}
a,ul li{
	margin: 0;
	padding: 0;
	font-family: "微软雅黑";
	list-style: none;
	text-decoration: none;
}
img {
	border: none;
}
a:hover{
	text-decoration:underline;
}
.clear:after,.clear:before{
	content: "";
	display: block;
	clear: both;/*清除浮动*/
}



.topnav .nav_zg{
	display:inline-block;
	width: 66px;
	height: 29px;
	border: 1px solid #d1d3dc;
	margin-top: 0px;
	margin-left: 60px;
	padding-left:10px;
	line-height:29px;
	background:url(../images/nav_xl_icon.png) no-repeat 52px 12px;
	position: relative;
	z-index: 90;
}
.topnav .nav_zg i{
	display: none;
	position: absolute;
	top:23px;
	left: 0px;
	width:78px;
	height:10px;
	background-color:#FFFFFF;
	z-index: 100;
}
.topnav .nav_zg:hover i{
	display:block;
}
.topnav .nav_zg ul{
	position: absolute;
	top: 28px;
	width: 280px;
	left:-100px;
	height:0px;
	background-color:#FFFFFF;
	overflow: hidden;
	transition: height 0.5s;
	z-index: 80;
}
.topnav .nav_zg:hover ul{
	height: 140px;
	border: solid 1px #D1D3DC;
}
.topnav .nav_zg ul li{
	float: left;
	font-size: 18px;
	margin:22px 10px 0px 12px;
}
.topnav .nav_zg ul li a{
	color: #3e466b;
}