Ключевые слова: above, background, blank, blue, board, building, business, concept, copy, danger, disease, epidemic, flu, health, home, house, infection, information, medicine, memo, message, note, office, pandemic, paper, prevention, protection, quarantine, reminder, roof, safety, security, separation, shape, sign, space, stay, stay at home, stay home, sticker, symbol, text, virus, warning, wooden, word, work, yellow,