geometric seamless pattern. retro motif geo print. repeated arcs, brackets mosaic background. simple symmetric ornament

abstract art backdrop background blend block blue bracket color craft cross decorative design digital effect element embroidery ethnic fancywork figure folk folkloric geo geometric geometry handmade illustration indigo knit mosaic motif ornament ornate pattern pixel print repeat retro seamless sew shape staggered stitch structure surface symbol symmetry tile vector wallpaper