使用方法：

1、head引入css文件

<link type="text/css" href="css/style.css" rel="stylesheet" />

2、head引入js文件

<script type="text/javascript" src="js/jquery.min.js"></script>

3、body引入部分

<div class="cont">

	<div class="biz_title">
		<h2>發展歷程</h2>
		<p>CONMPANY HISTORY</p>
	</div>
	
	<div class="biz_timtline-box">
		<div class="biz_timeline">
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2012.12</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">公司成立</div>
				</div>
			</div>
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2013.02</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">園區業務方向</div>
				</div>
			</div>
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2014.03</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">獲天使輪投資900萬元</div>
				</div>
			</div>
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2013.09</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">業務轉型互聯網營銷</div>
				</div>
			</div>
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2016.06</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">V1.0版本上線</div>
				</div>
			</div>
			<div class="biz-timeline-box  clearfix">
				<div class="biz_timeline-time">2017.03</div>
				<div class="biz_timeline-node"></div>
				<div class="biz_timeline-eventbox">
					<div class="biz_timeline-event">期待。。。。</div>
				</div>
			</div>
		</div>
		<div class="biz_longString"></div>
	</div>
	
</div>

<script type="text/javascript">
$(function(){
	var item = $(".biz-timeline-box").length;
	var height = $(".biz-timeline-box")[0].offsetHeight + 45;
	$(".biz_longString").css('height',height*item+57);
})
</script>