panor header website banner wide space background multicolor modern gradient triangles lines pattern geometric

purple blue background geometric abstract line triangular violet fuchsia turquoise water light dark geometry lilac long web sale neon art composition mosaic shape futuristic template graphic wallpaper paper business concept motion smooth style shiny glossy polygon bright colours elegant wave curve scratch metallic diamond crystal collage texture flier panor header website banner wide design space multicolor modern gradient triangles lines pattern generated use