Ключевые слова: 21, background, beautiful, boy, care, cheerful, child, childhood, chromosome 21, cute, day, disabled, down, face, fun, garden, girl, grass, happiness, health, joy, kid, lifestyle, little, male, march 21, mental, nature, one, outdoor, outside, park, people, person, portrait, positive, preschool, psychology, small, smile, syndrome, walking, white, world, young,