Ключевые слова: author, background, bible, blue, book, bookshelf, bookstore, collection, color, colored, colorful, design, diary, dictionary, digital, education, electronic, element, green, grey, icon, illustration, information, isolated, knowledge, learning, library, literature, magazine, media, page, paper, pattern, picture, publishing, read, reading, red, seamless, set, shadow, shape, sign, studying, symbol, text, textbook, white,