Ключевые слова: abstract, aged, ancient, antique, art, back, background, black, blackboard, blank, board, build, cement, chalk, chalkboard, children, classroom, college, concrete, cool, dark, design, detail, distressed, dust, floor, frame, gradient, gray, grey, grunge, horizontal, material, modern, old, paper, pattern, retro, rough, rustic, solid, structure, surface, texture, textured, vintage, wall, wallpaper, white,