retrofuturistic frame in geometric style with gears. frame in atompunk style 1950s - 1960s. vintage linear border with place for

frame border vintage design background art retro graphic ornament element card linear modern template line vector decoration decorative style outline label invitation elegant banner shape geometric minimal simple abstract deco steampunk mechanical greeting atompunk minimalist mechanism geometry creative aesthetic print cover premium gear decor backdrop minimalistic contour brochure leaflet