如何去武大看樱花 核心导读：武大如何看樱花的知识，武大如何看樱花的知识，后面有全面的介绍。
On a website, I want to display the main navigation as an unordered list. After 3 items I want to close that list and open a new one, so it eventually looks something like this:
加载中,请稍侯......