#nav-sel {
	color: #606263;
	font-size: 14px;
	font-family: "Microsoft YaHei";
	font-weight: 400;
	margin-left: auto;
	margin-right: auto;
	margin-top: 10px;
	max-width: 1345px;
	width: 95%;
}

#nav-sel a {
	text-decoration: none;
	color: inherit;
}

#nav-sel a:hover {
	color: #00afee;
}


#about-vention {
	font-size: 18px;
	line-height: 60px;
	text-align: center;
	color: #616161;
	margin-top: 70px;
	font-family: "Microsoft YaHei";
	font-weight: 400;
}

#about-vention a {
	text-decoration: none;
	color: inherit;
	margin-left: 1.5625vw;
	margin-right: 1.5625vw;
}

#about-vention a:hover {
	color: #00adee;
}

#about-vention .selected {
	color: #00adee;
}

#about-vention-01 {
	border-top: 1px solid #ccc;
}

#timeline_wrapper {
	position: relative;
	overflow: hidden;
	max-width: 1345px;
	width: 95%;
	margin: auto;
	margin-top: 30px;
}

#timeline {
	width: 2px;
	height: 100%;
	background: #ccc;
	position: absolute;
	left: 50%;
}

#events_wrapper {
	width: 100%;
	float: left;
	display: inline-block;


}

.event-left,
.event-right {
	display: inline-block;
	margin-bottom: 50px;
	width: 45%;
}

.event-left {
	float: left;
	margin-left: 5%;
	position: relative;
}

.event-right {
	float: right;
	margin-right: 5%;
	position: relative;
	top: 30px;
}

.event-cont-main {
	width: 77.22581%;
}

.event-right .event-cont-main {
	float: right;
}

.event-left .arrow-container {
	position: absolute;
	width: 22.77419%;
	top: 50%;
	right: 0;
	transform: translateY(-50%);
}

.event-right .arrow-container {
	position: absolute;
	width: 22.77419%;
	top: 50%;
	left: 0;
	transform: translateY(50%);
}

.arrow {
	width: 100%;
	height: 2px;
	background: #ccc;
}

.event-left .arrow {
	position: absolute;
	top: 50%;
	right: 0;
	transform: translateY(-50%);
}

.event-right .arrow {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
}

.arrow-head {
	width: 0.9375vw;
	height: 0.9375vw;
	background: #fff;
	border: 3px solid #ccc;
	border-radius: 50%;

}

.event-left .arrow-head {
	position: absolute;
	top: 50%;
	transform: translate(50%, -50%);
	right: 0;
}

.event-right .arrow-head {
	position: absolute;
	top: 50%;
	transform: translate(-50%, -50%);
}

.year {
	font-size: 23px;
	font-family: "Microsoft YaHei";
	font-weight: 400;
	color: #262032;
}

.event-pic {
	width: 100%;
	height: 0;
	padding-bottom: 40.909024%;
	position: relative;
	margin-left: auto;
	margin-right: auto;
	margin-top: 20px;
	margin-bottom: 10px;
}

.event-pic img {
	width: 100%;
	height: 100%;
	position: absolute;
}

.description {
	height: 72px;
	color: #546e7a;
	font-size: 14px;
	line-height: 25px;
	font-family: "Microsoft YaHei";
	font-weight: 400;
	max-width: 100%;
	text-align: left;
}

.event-left:hover .arrow,
.event-right:hover .arrow {
	background: #00adee;
}

.event-left:hover .arrow-head,
.event-right:hover .arrow-head {
	background: #00adee;
	border-color: #00adee;
}