body {
	background-color: #f4f4f4;
	min-width: 1180px;
}

.py-80 {
	padding-left: 80px;
	padding-right: 80px;
}

.px-50 {
	padding-top: 50px;
	padding-bottom: 50px;
}

.container {
	width: 1180px;
	margin-left: auto;
	margin-right: auto;
	position: relative;
	padding-bottom: 150px;
}

.top {
	max-width: 1920px;
	min-width: 1180px;
	height: 688px;
	background: url(../images/top.jpg?v=1) no-repeat center;
	background-size: cover;
	margin: auto;
	position: relative;
}

.top .u-txt {
	width: 1180px;
	position: absolute;
	color: #5d5d5d;
	font-size: 18px;
	line-height: 2;
	left: 50%;
	margin-left: -590px;
	bottom: 120px;
}

.nav {
	background-color: #fff;
	position: absolute;
	right: 10px;
	color: #6d6e70;
	font-size: 24px;
	text-align: center;
	line-height: 2;
	top: 120px;
	transition: all ease .3s;
	border: 1px solid #e7e7e8;
	border-radius: 5px;
	border-top: none;
}

.nav .mao {
	margin-top: -120px;
	padding-bottom: 5px;
	margin-left: -20px;
}

.nav .item {
	display: block;
	height: 55px;
	line-height: 55px;
	width: 168px;
	cursor: pointer;
	margin-bottom: 5px;
}

.nav .item.active {
	background-color: #d2303b;
	color: #fff;
}

.nav .code {
	width: 135px;
	margin: 8px auto;
}

.nav .back-top {
	text-align: center;
	color: rgba(255, 255, 255, .9);
	cursor: pointer;
}



.main-wrap {
	width: 980px;
	background-color: #fff;
	margin-top: -99px;
}

.pic {
	display: block;
	width: 100%;
}

#nav1 .content {
	font-size: 18px;
	line-height: 2;
	text-indent: 2em;
	color: #595858;
	text-align: justify;
	padding: 35px 80px 80px;
}

#nav1 .pic{
	margin-top: 35px;
}