Create an illustration of a serene winter landscape with a cool, gentle gradient sky. In the background, snow-capped mountains rise majestically. A stylized, animated sun representing Vitamin D shines brightly in the sky. Three bold, colorful circles, each labeled with the vitamins C, D, and E, are prominently displayed as the main focal points. Evergreen trees, symbolizing health and vitality, are scattered throughout the scene. Delicate snowflakes fall gently from the sky, adding a touch of winter wonder. The design should be clean and minimal, allowing for easy text overlay and ensuring the vitamins remain the main attraction.