Two advertising styles: "straight font" vs "curved font"

Art Nouveau advertising posters 

Wiener Werkstatte font in some posters of the group

Dynamic, undulating, and flowing lines in a syncopated rhythm, are found throughout the Art Nouveau graphics (advertisements, posters e font). All items, also the lettering, were pictured with curved flowing lines that were rarely symmetrical.

Instead Weiner Werkstatte group was obsessed with squares and grids, as is evident in these posters. The appearance of the letters and articles was unified by elements such as straight lines (orizontal, vertical and oblique) and decorative square.