retro 70s 80s geometric posters set. groovy collection cover

design line poster abstract vector background 70s decoration art modern shape pattern cover trendy geometric retro vintage banner circle creative style 1970s graphic placard print stripe color concept 1960s 60s artwork funky rainbow oldfashioned striped wallpaper template card 80s curve layout people ornate passion path pop textured wave copy space posters set groovy collection cover wall benner design elements isolated collection minimalistic old-fashioned artwork