当鼠标放入主菜单之上时，马上就横向的显示出了二级菜单栏，这款淡蓝色的二级CSS导航菜单非常不 错了，不管是用来学习，还有放到网站的首页上，都非常不错的，适合那些主要以蓝色为主的网站，搭 配起来也变好看的。-When the mouse is placed above the main menu, immediately showed two horizontal menu bar, this light blue two CSS navigation menu is very good,