Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
我只想在屏幕上显示七个选项卡中的五个（水平），单击第四个选项卡时，子选项卡应垂直显示在第四个选项卡上方并显示剩余的 2 个选项卡。
这是我需要的屏幕图像
图片网址： http: //tinypic.com/r/108iof4/6