How do i make the white box move in the code given below

Question

https://code.sololearn.com/WwT8fTFHKE0a/?ref=app

Answer 1

add transform: translate(100px, 200px);
https://code.sololearn.com/WBHTL7n62T4s/?ref=app

Answer 2

https://www.w3schools.com/css/tryit.asp?filename=trycss3_animation3
check out this code

Answer 3

thanks a lot to both of you my doubt has been cleared!!!