Library not working

hi,
I keep on getting the same error message with libraries but I don’t know how to solve the problem.

Arduino: 1.8.5 (Windows 10), Board: “Arduino/Genuino Uno”

D:\Arduino Project\CD contents\English\code\Lesson 11 Membrane Switch Module\custom_keypad\custom_keypad.ino:13:20: fatal error: Keypad.h: No such file or directory

#include <Keypad.h>

^

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.

this is the error message i get
please help!

It sounds like a clone learning kit you have.
There should be a folder on the CD with the libraries used in the examples.

Those libraries need to be imported into the sketches folder on your computer into the folder named "libraries"

See the real arduino page HERE for help with that topic