官方文档横向滚动没有效果？
<scroll-view class="scroll-view-con" scroll-x style="width: 100%">
<view id="green" class="scroll-view-item bc_green">1</view>
<view id="red" class="scroll-view-item bc_red">2</view>
<view id="yellow" class="scroll-view-item bc_yellow">3</view>
<view id="blue" class="scroll-view-item bc_blue">4</view>
</scroll-view>
经过测试发现要想实现横向滚动，还需要两个条件
- scroll-view容器设置 white-space: nowrap
- 项目需要 display: inline-block
