Question

What is postmodernism?

Answer 1

I would say its a late 20th century style of art, and architecture 

Answer 2

Postmodernism is a late-20th-century style and concept in the arts, architecture, and criticism that represents a departure from modernism and has at its heart a general distrust of grand theories and ideologies as well as a problematical relationship with any notion of “art.”

Hope this helps :))