First, let's see if we need such a drop-down menu. If so, let's look down at how to operate it (if you want to see the specific effect of my wp blog menu, you can Baidu "Li Fei seo blog")

operation sequence/order

Add classified directories (add all required directories, and adjust which directory is the parent directory).

Find the blog theme menu (select Category Select All to add to the menu)

Drag and drop the mouse to drop down the menu order effect to view the picture.

Menu settings, according to your own requirements? Navigation menu, main navigation, top navigation

Save the menu for viewing. So what? A drop-down menu of wp blog is ready.

Of course, if you still can't understand it, you can learn Baidu Li Fei seo blog.