Can someone shed more light on how to use box-shadow

Question

css

Answer 1

Run this code to study the settings of box-shadow
https://code.sololearn.com/WKl3KES9E1Ny/?ref=app

Answer 2

https://code.sololearn.com/WTB0wpOPUgw4/?ref=app
Visit this link, to learn how
Text-shadow and box-shadow works.