Code example of the horizontal level-2 drop-down menu implemented by CSS3, and css3 drop-down menu

Code example of the horizontal level-2 drop-down menu implemented by CSS3, and css3 drop-down menu

Code example of the horizontal level-2 drop-down menu implemented by CSS3:
The horizontal level-2 drop-down menu is very commonly used. For example, the navigation bar of many websites is such a level-2 drop-down menu, which is very useful. This section describes the drop-down menu implemented by CSS3, of course, many browsers do not support the current situation, but I believe it will not take long for this situation to change.
The code example is as follows:

<! DOCTYPE html> 
The original address is: http://www.softwhy.com/forum.php? Mod = viewthread & tid = 10900.
For more information, see: http://www.softwhy.com/divcss/