.main {
	height:696px;
	width: 100%;
	position: relative;
}

.main-bg {
	width: 100%; background-size:cover; background-position:center;
	height: 100%;
}

.main-bg img {
	width: 100%;
	height: 100%;
}

.main-title {
	width:1200px;
	left: 50%;
	transform: translateX(-50%);
	height: 120px;
	background-color: #FFFFFF;
	position: absolute;
	bottom: 0;
}

.title-text {
	font-size: 25px;
	font-weight: bold;
	margin-top: 25px;
}

.line {
	height: 2px;
	margin-top: 25px;
	background-color: #c9c9c9;
}

.all-title {
	margin-top: 40px;
	padding-left:45px; padding-right:45px;
}

.nav-side {
	width: 225px;
	position: absolute;
	left: -225px;
	top: -35px;
}

.laboratory-nav {
	width:1200px;
	margin: 0 auto;
	position: relative;
}

.nav-top {
	height: 140px;
	background-color: #083388;
	color: #FFFFFF;
}

.nav-top>div {
	font-weight: bold;
}

.txt {
	margin-top: 10px;
	font-size: 30px;
}

.nav-tit {
	padding: 35px 32px;
}

.nav-bottom {
	background-color: #fff;
	height: auto;
}

.side-cont {
	padding: 28px 32px;
}

.side-cont li {
	margin-bottom: 18px;
}

.side-cont li a {
	font-weight: bold;
	color: #083388;
}

/* .side-cont li a:visited {
	color: #b0b0b0;
} */

.laboratory-cont {
	padding-top: 35px;
	padding-bottom: 120px;
}

.all-cont {
	width:100%;
	padding-left:45px;
	padding-right:45px;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	margin-bottom: 28px;
}

.title {
	font-size: 30px;
	font-weight: bold;
	color: #083388;
	margin-bottom: 50px;
}

.tit {
	margin-bottom: 20px;
}

.title-cont {
	line-height: 25px;
	margin-bottom: 20px; text-align:justify;
}

.l-line {
	margin-top: 50px;
	height: 2px;
	background-color: #c9c9c9;
}

.cont-pic {
	display: flex;
	justify-content: space-between;
}

.cont_left,.cont_right {
	width: 46%;
	height: auto;
	position: relative;
}

.title-pic {
	width: 100%;
	height: 225px;
	position: relative;
}

.title-pic img {
	width: 100%;
	height: 100%;
}

.big-img {
	width: 100%;
	height: 495px;
}

.s-img {
	height: 225px;
	width: 100%;
	display: flex;
}

.l-img,
.r-img {
	height: 100%;
}

.l-img {
	width: 39%;
	margin-right: 20px;
}

.r-img {
	width: 60%;
}

.l-img img,
.r-img img,
.big-img img {
	width: 100%;
	height: 100%;
}
@media screen and (max-width:1440px) {
	.laboratory-nav{ width:900px;}
	.main-title{ width:900px;}
}