Hot to isertan img in background

Question

for project

Answer 1

To review, here's one way:
https://www.sololearn.com/learn/CSS/1104/?ref=app

Answer 2

For further review:
https://www.sololearn.com/learn/CSS/1105/?ref=app
(see information box at bottom of first slide)

Answer 3

🏦I need the way in which one IMG display