The set design, costumes and props took about two weeks to prepare. Warm worked primarily on the sets, while Röhrig handled the painting and Reimann was responsible for the costumes. Robinson noted the costumes in "Caligari" seem to resemble a wide variety of time periods. For example, Caligari and the fairground workers' costumes resemble the Biedermeier era, while Jane's embody Romanticism. Additionally, Robinson wrote, Cesare's costume and those of policemen in the film appear abstract, while many of the other characters' seem like ordinary German clothes from the 1920s. The collaborative nature of the film's production highlights the importance that both screenwriters and set designers held in German cinema of the 1920s, although film critic Lotte H. Eisner said sets held more importance than anything else in German films at that time. "The Cabinet of Dr. Caligari" was the first German Expressionist film, although Brockmann and film critic Mike Budd claim it was also influenced by German Romanticism; Budd notes the film's themes of insanity and the outcry against authority are common among German Romanticism in literature, theatre and the visual arts. Film scholar Vincent LoBrutto said the theatre of Max Reinhardt and the artistic style of Die Brücke were additional influences on "Caligari".