Ключевые слова: 19, background, banner, billboard, business, city, compulsory, corona, coronavirus, covering, covid, covid19, distance, distancing, entrance, entry, face, grocery, hairdresser, health, mandatory, mask, masks, message, no, notice, obligation, obligatory, panoramic, plant, please, ppe, precaution, prevention, preventive, protective, public, regulation, requirement, requirement store, restriction, sign, social, store, supermarket, text, virus, warning, wear, wearing,