Ключевые слова: background, black, business, chroma key, close up, computer, dark, darkness, device, display, electronic, electronic web, empty gadget, finger, gadget, green, green screen, hand, internet, internet surfing, media, mobile, modern screen, monitor, movie, office work, online education, online study, pc, person, phone, screen, scroll, scrolling, smart phone, smartphone, social media, tablet computer, technology, telephone, television, texture, touch, touchpad, touchscreen, using, video, view, visual, web,