*{
	color: #333;
	padding:0px;
	margin: 0px;
	box-sizing: border-box;
	font-family: "微软雅黑";
}
a{
	text-decoration: none;
	color: #333;
}
a:hover{text-decoration: none;}
img{
	vertical-align: middle;
	border: none;

}
li{list-style: none;}
/*nav*/
section{
	min-width: 1490px;
	width: 100%;
	background: #fff;
}
.nav{
	width: 1490px;
	height: 80px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.nav .logo{}
.nav .header_nav{
	display: flex;
	justify-content: space-between;
}
.nav .header_nav li{
	height: 100%;
	padding: 0 20px;
	position: relative;
	transition: all linear 0.3s;
}
.header_nav li:hover>a{color: #FFFFFF;}
.header_nav li:hover{background: #FF6700;}
.header_nav li.active{background: #FF6700;}
.header_nav li.active>a{color: #FFFFFF;}
.header_nav li>a{
	display: block;
	width: 100%;
	text-align: center;
	line-height: 80px;
	font-size: 18px;
	height: 80px;
	overflow: hidden;
}
.header_nav li div.sec_nav{
	position: absolute;
	top: 80px;
	left: 0px;
	z-index: 3;
	width: 100%;
	display: none;
	background: #fff;
}
.header_nav li div.sec_nav>a{
	display: block;
	line-height: 60px;
	text-align: center;
	transition: all linear 0.3s;
	color: #333;
	height: 60px;
	overflow: hidden;
}
.header_nav li div.sec_nav>a:hover{background: #FF6700;color: #FFFFFF;}
/*banner*/
.banner{
    	width: 100%;
	min-width: 1490px;
    	height: 550px;
	position:relative;
	overflow:hidden;
}
.pb-carouselWarp .pb-carousel{
	position:relative;
	height:100%;
}
.pb-carouselWarp .pb-carousel>div{
	display:none;
	position:absolute;
	width:100%;
	height:100%;
	top:0;
	left:0;
}
.pb-carouselWarp .pb-carousel .pb-this{
	display:block;
	left:0;
}
.pb-carouselWarp .pb-arrow{
	position:absolute;
	top:50%;
	margin-top:-20px;
	width:40px;
	height:40px;
	border-radius:50%;
	background:#000;
	cursor:pointer;
	border:0;
}
.pb-carouselWarp .pb-arrow-prev{
	left:20px;
	outline: none;
	background:#ff6700 url(../img/arrow-left.png) no-repeat center;
}
.pb-carouselWarp .pb-arrow-next{
	right:20px;
	outline: none;
	background:#ff6700 url(../img/arrow-right.png) no-repeat center;
}
.banner_con1,.banner_con2{
	width: 100%;
	height: 100%;
	margin: 0 auto;
	position: relative;
    	overflow: hidden;
}
.banner_con1{
	background: url(../img/beijing.jpg) no-repeat;
	background-position: 50% 50%;
}
.banner_con2{
	background: url(../img/beijing1.jpg) no-repeat;
	background-position: 50% 50%;
	/*animation: demo linear 10s;*/
}
.banner_con3{
	background: url(../img/beijing2.jpg) no-repeat;
	background-position: 50% 50%;
}
@keyframes demo1{
	from{
		transform: scale(1);
	}
	to{
		transform: scale(1.1);
	}
}
.banner_con{
	width: 1200px;
	height: 100%;
	margin: 0 auto;
	position: relative;
}
.posi1{
	position: absolute;
	left: 50px;
	top: 25%;
}
.posi2{
	position: absolute;
	right: 50px;
    	top: 35%;
}
.posi3{
	position: absolute;
	left: -100px;
	top: 25%;
}
.posi4{
	position: absolute;
	right: 0px;
    	top: 35%;
}

/*footer*/
.footer{
	min-width: 1490px;
	width: 100%;
	height: 150px;
	background: url(../img/footer_bg.jpg) no-repeat;
	background-size: 100% 100%;
	display: flex;
	flex-direction: column;
	justify-content: space-around;
	text-align: center;
	padding: 15px 0;
}
.footer>p a{
	color: #fff;
	margin: 0 15px;
}
.footer>p span{
	color: #ccc;
	margin: 0 15px;
	font-size: 15px;
}