Ключевые слова: air, artistic, azure, backdrop, background, beautiful, blue, book, break, cloud, cloudy, color, concept, daylight, education, empty space for text, fluffy, front, heart, heaven, high, horizon, information, knowledge, learn, library, literature, love, love of books, nature, open book, outdoors, page, paper, read, relax, romantic, scenery, scenic, school, shape, sky, skyline, study, sunny, symbol, transparent, valentine, wallpaper, wisdom,