Posts on the ramp’s railing evoke a white-picket fence from one angle and a fortified barrier from most others. Its owner, Dee Dee Blanchard (Patricia Arquette), brings her daughter, Gypsy Rose (Joey King), into the little pink house by pushing the girl, in a wheelchair, up a ramp. It’s a bungalow with a Pepto-Bismol tint. The central setting of “The Act,” now on Hulu, is a humble home in Springfield, Missouri.