Ключевые слова: abstract, art, backdrop, background, barrier, border, cage, chain, color, cover, design, element, fence, frame, grate, grid, grille, industrial, industry, iron, isolated, jail, link, macro, material, mesh, metal, metallic, net, pattern, prison, protection, purple, safety, seamless, security, shape, shiny, speaker, stainless, steel, system, technology, texture, textured, wall, wallpaper, wire,