.header{
	position: fixed;
	top:0;
	left: 0;
	width: 100%;
	height: 50px;
	background-color: rgba(0,0,0,.15);
}
.header .container{
	width: 960px;
	margin: 0 auto;
}
.header .nav{
	float: left;
	margin-top: 12px;
}
.header .nav li{
	float: left;
	margin-right: 7px;
}
.header .nav li a{
	color:#fff;
	font-size: 13px;
	padding:8px 5px;
	border:1px solid transparent;
	border-radius: 5px;
}
.header .nav li a:hover{
	border:1px solid rgba(255,255,255,5.2);
}
.header .nav li.current a{
	background: rgba(255,255,255,.2);
}
.header .logo{
	display: block;
	width: 60px;
	height: 60px;
	color:#fff;
	border-radius: 50%;
	line-height: 60px;
	text-align: center;
	position: fixed;
	top:20px;
	left: 50%;
	margin-left: -30px;
	background-color: #00CED1;
	transition:top .6s;
}
.header .logo:hover{
	top:25px;
}
.banner{
	height:31em;
	-webkit-background-size: cover;
	background-size: cover;
	background-position: 50% 50%;
	background-image: url(../../images/288816.jpg);
}
.main_left,
.main_right{
	/*float: left;*/
	width: 50%;
	height:auto;
}
.main_left{
	text-align: center;
}
.main_left ul li{
	list-style-type: decimal;
	list-style-position: inside;
}