retro 60`s and 70`s style minimalist poster in 18x24 format size - geometric with circles and abstract s

18x24 1960 1970 60s 70s abstract art artwork background blue century circle collection color composition decor design fabric fashion funky geometric groovy hippie home line mid minimal minimalist modern modernist ornament pattern pop post poster print red repetitive retro scandinavian set seventies simple sixties square swatch textile trendy triangle vector vintage