need help to compiling codes together for a project

I am a very confused on what i am doing wrong with this project . it is a prop used in my business and I am having no luck puting it together, this is the link to what i am doing and i get stuck every time on the this

Arduino: 1.8.13 (Windows Store (Windows 10), Board: “Arduino Uno”

bomb_project4:6:10: fatal error: Keypad.h: No such file or directory

#include <Keypad.h>


compilation terminated.

exit status 1

Keypad.h: No such file or directory

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

and the link to the progect is this

i bought all the stuff he listed and now i am stuck with programing issues

Did you download the "Add to" file on the instructables webpage and unzip the files to the libraries folder? The error message you are getting indicates the Arduino IDE cannot locate the Keypad library files, which are contained within that zip file.

I don't mean to sound stupid but that is what I don't know how to do. Can it be explained to me like I am brand new at this

lol I figured it out and thank you

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