Ключевые слова: back to school, background, blue, briefcase, bright, business, clear, colleague, color, colored composition, colorful office supplies, composition, copy space, delivery, different, documents, envelope, equipment, files, folder, folders, four, holder, information, isolated, isolated on white, letter, mail, multicolored, office, office supplies, organization, paper, paperwork, pink, plastic, plastic envelope, postal, product, rainbow, report, sale, school, set, stationery, support, transparent, white, white background,