.navBox {
	display: flex;
	height: 60px;
	font-size: 20px;
	color: #555;
	border-bottom: 1px solid #e2e3e4;
	padding-left: 50px;
	align-items: flex-end
}

.navBox .nav {
	width: 160px;
	color: #555;
	text-align: center;
	line-height: 34px;
	position: relative;
	cursor: pointer
}

.navBox .nav:before {
	content: " ";
	display: none;
	height: 2px;
	background: #2260ff;
	width: 160px;
	position: absolute;
	left: 0;
	bottom: 0px
}

.navBox .active {
	color: #2260ff;
	font-weight: 700
}

.navBox .active:before {
	display: inline-block
}

.about-title-blk {
	padding: 14px 45px;
	background: #fff;
	box-shadow: 0 0 8px 6px hsla(0, 0%, 95.3%, .5)
}

.about-title-blk .intro {
	margin: 8px 0 36px;
	font-size: 15px;
	color: #777;
	text-align: justify;
	line-height: 30px
}

.about-title-blk .intro:last-child {
	margin-bottom: 0
}

.about-abstract .main .row:nth-of-type(odd) {
	background: #fff
}

.about-abstract .main .row:nth-of-type(odd) .imgBox {
	float: left
}

.about-abstract .main .row:nth-of-type(odd) .descBox {
	float: right
}

.about-abstract .main .row:nth-of-type(2n) {
	background: #f7fafd
}

.about-abstract .main .row:nth-of-type(2n) .imgBox {
	float: right
}

.about-abstract .main .row:nth-of-type(2n) .descBox {
	float: left
}

.about-abstract .main .imgBox {
	width: 540px;
	height: 100%;
	line-height: 520px;
	text-align: center
}

.about-abstract .main .imgBox img {
	vertical-align: middle;
	max-width: 540px;
	max-height: 400px
}

.about-abstract .main .descBox {
	line-height: 24px;
	width: 570px;
	height: 530px;
	display: flex;
	flex-wrap: wrap;
	align-content: center;
	align-items: center
}

.about-abstract .main .descBox .title {
	width: 570px;
	font-weight: 700;
	font-size: 24px;
	color: #000;
	margin-bottom: 11px
}

.about-abstract .main .descBox .pre {
	font-size: 16px;
	color: #555;
	line-height: 28px;
	max-height: 400px;
	overflow: auto;
	white-space: pre-wrap
}

.about-abstract .main .row {
	overflow: hidden
}

.about-abstract .main .row .content_1200,
.about-abstract .main .row {
	/* height: 530px;
	line-height: 530px */
}

.about-abstract .main .content_1200 {
	width: 1200px;
	margin: 0 auto
}