Ключевые слова: abstract, app, background, banner, book, business, class, college, communication, computer, concept, course, design, digital, distance, education, flat, icon, illustration, information, internet, knowledge, landing, learning, library, media, mobile, network, object, online, people, school, science, service, social, student, study, symbol, teacher, teaching, technology, training, tutorial, university, video, web,