Early modernism was based on the idea that form follows function: that design was derived from practical considerations

and internationally it appeared during the late 1920s. In the Nordic countries the ideas were picked up and transformed into a style that was called "funksjonalisme" (functionalism) during the 1930. Those who did not like the new architectural style, gave it the nickname "funkis" as an insult. However, nowadays "funkis" is no longer a derogatory term. It's used to describe a style of two storey villas, houses for one or two families, with: nearly flat or low pyramidal roofs

a combination of horizontal and vertical cladding

horizontal connected rows of windows and the characteristic corner windows. The style typically has simple designs without ornamentation (particularly if compared to older architectural styles).