Ключевые слова: abstract, art, backdrop, background, black, blank, check, checker, checkered, decor, decoration, design, education, empty, engineering, flat, geometric, graph, graphic, grid, line, material, modern, note, notebook, page, paper, pattern, print, rectangle, repeat, retro, school, seamless, shape, sheet, simple, square, style, template, texture, textured, tile, vintage, wallpaper, white,