The Paper Age
Roughly, the period of comics between the mid 1950s and the early 1970s. Protagonists during this period were usually smiling superheroes in brightly colored costumes. Power levels tended to be incredibly high, with metahumans having dozens of powers and crimefighters that always have just the right tool on them for any situation.
An important aspect of the Silver Age was the outright craziness. Alien invasions, atomic monsters, Soviet mind-control plots; these were SOP for a hero in the Silver age. Interestingly, despite the ridiculous power level of the heroes, they almost never simply beat their problems into submission. Usually, they would find some way to de-power or outsmart the villains before carting them off to the local police station (Yes, even the atomic monsters).