The buttons are working with all the different neumorphic classes.
They need to have a neumorphic parent to get the
neumorphic shadow to apply.
Flat buttons
The neumorphic flat shadow allows you to create a flat button.
Concave buttons
The neumorphic concave shadow allows you to create a concave button.
Convex buttons
The neumorphic convex shadow allows you to create a convex button.
Pressed buttons
The neumorphic pressed shadow allows you to create a pressed button.
Bordered buttons
The neumorphic bordered shadow allows you to create a bordered button.
Dynamic buttons
You can change the button shadow using the data-neu- prefix followed by the change mode
you want to use.
The different modes are on the shadows page.