v1.0.2: Optimize snowflake behavior and rendering details.

Adjusted movement and size calculations for smoother animations. Improved z-index layering, transparency, and horizontal motion for better visual effects. Added comments for clarity and included a debug output option.

v1.0.1: Add unique container ID handling for snowflake elements

Introduce a unique container ID to prevent conflicts when multiple snowflake animations run simultaneously. This ensures proper targeting and management of snowflake elements, improving stability and isolation in multi-instance scenarios.