Problem with css cube

Question

It should be a box and two images are mirrored
https://code.sololearn.com/WiGTIV7t04RN/?ref=app

Answer 1

Check this video:
https://youtu.be/trTGvINO1g8

He make 3d cube, if this is what you are trying to do

Answer 2

The img tags were not closed properly.

Answer 3

Calviղ 😊
But the mirror still remains