Ключевые слова: advertising, board, business, cafe, cafeteria, coffee, commerce, company, customer, dining, distance, door, emergency, end, entrance, food, front, glass, grocery, hanging, hygiene, infection, information, international, local business, lockdown, mask, message, new, normal, notice, open, people, quarantine, restaurant, retail, service, shop, sign, store, symbol, text, vintage, virus, welcome, window,