Roof pitch is typically low, but styling may be gabled or hipped. Eaves are often deep recalling the Prairie style of previous decades. The upper level may be cantilevered over the lower level providing additional square footage without increasing the footprint. The facade is plain with little decorative ornamentation. Windows are typically double-hung on the older variations with sliding windows appearing during the 1960s. Porches and walkways often became secondary to the driveway, which became more prominent as cars and their garages were integrated into American lifestyles.