Is there a word for the style/device of making one aspect of a literary work contrast with another drastically? E.g., a comic book about the Holocaust[1] or a very upbeat tune with very depressing lyrics?
[1] Nowadays, there are many serious graphic novels, but I strongly suspect that that was not the case when Maus came out, so Maus would have been seen as having contrasting aspects of the sort I'm asking about.