Ключевые слова: airport, app, black and white, buying, certificate, check, clip art, clipart, code, consumerism, corona, coronavirus, covid, credit card, customer, digital tablet, doodle, finance, fly, giving, health, icon set, illustration, immune, lifestyles, linear, medical, mobile phone, one person, online shopping, outline, pandemic, pass, paying, people, quarantine, result, retail, security, shopping, smart phone, sticker, syringe, test, thin, usa, vaccination, vaccine,