Superman & Batman: Generations

Superman & Batman: Generations is the umbrella title of three Elseworlds comic book limited series published by DC Comics in the United States, written and illustrated by John Byrne. A major concept of the series is the avoidance of the floating timeline; it places Superman, Batman, and the other members of the DC Universe in a single timeline, showing the characters aging and being replaced by their progeny.

Source: Wikipedia — Superman & Batman: Generations (CC BY-SA 4.0)