Ключевые слова: app, application, art, background, beat, black, button, cardio, cellphone, circle, color, colorful, concept, contour, design, device, digital, fitness, flat, gadget, graphic, green, health, healthcare, healthy, heart, heartbeat, icon, illustration, isolated, lifestyle, line, linear, lineart, medical, medicine, mobile, monitor, outline, phone, pulse, rate, screen, smart, smartphone, sport, symbol, technology, tracker,