实现多个div在容器内横向排列，
利用white-space这个属性防止父容器内容换行，
同时将容器内元素设置为行内块 display：inline-block来实现。
实现代码：
<div style="width: 100%;margin-top: 10px;margin-bottom: 30px;white-space: nowrap;overflow-x: auto;-webkit-overflow-scrolling:touch;"><span @click="clickcolumnClass($event)" class="columnClass active" >招商引资</span><span @click="clickcolumnClass($event)" class="columnClass">优惠政策</span><span @click="clickcolumnClass($event)" class="columnClass">优质资源</span><span @click="clickcolumnClass($event)" class="columnClass">对外宣传</span><span @click="clickcolumnClass($event)" class="columnClass">工作动态</span><span @click="clickcolumnClass($event)" class="columnClass">大会新闻</span><span @click="clickcolumnClass($event)" class="columnClass">重大活动</span></div>
