What is position in css

Answer 1

Check this...this site must help you to get your answer☺☺☺
https://www.w3schools.com/tags/att_body_background.asp

Answer 2

https://code.sololearn.com/W4dGFJx8wFW7/?ref=app

CSS position, you can choose absolute or relative.
position absolute will set x, y as 0, 0 of parent
position relative will set x, y as the normal position

Then, use top, left or bottom / right to change the place