Make the area/ screen "infinite"

What I mean by this is, that when my player reaches the edge of the camera/ background it continues to move but gets “teleported” to the other end of the camera/ screen.
I have no idea how I should do this, and I hope you can help me.
My aim is to let it look like this:

Sorry, I thought this is the answer section (I’m new to unity and its community system).