轮播广告在网站中的应用实在是太常见了，下面说一说怎样使用bootstrap中的Carousel插件来实现轮播广告效果，下图为最终效果：
First slide label
Nulla vitae elit libero,a pharetra augue mollis interdum.
Second slide label
Lorem ipsum dolor sit amet,consectetur adipiscing elit.
Third slide label
Praesent commodo cursus magna,vel scelerisque nisl consectetur.
Fourth slide label
Nulla vitae elit libero,a pharetra augue mollis interdum.
