Ключевые слова: 2019, abstract, activity, backdrop, background, board, brown, business, color, concept, conceptual, day, design, empty, forest, garden, glasses, green, improvement, inspiration, landscape, leaves, light, list, material, natural, nature, notes, office, old, optimization, outdoor, park, pattern, perspective, poster, rough, sign, solution, space, success, summer, surface, table, text, texture, tree, vision, wood, wooden,