Generate an SVG as a wedding congratulations greeting card illustration. Playful vibrant style. Background fill #FFF5F8. Draw a colorful paper flower arch — flowers in coral (#F97316), hot pink (#EC4899), lavender (#A78BFA), and yellow (#FBBF24). Scatter confetti rectangles and circle dots across canvas (coral, pink, purple, gold). Add 3 heart shapes in gradient coral-to-pink floating upper canvas. Bold round shapes, cheerful feel. No text, no labels, no emoji. Output raw SVG code only starting with <svg.

The image shows a vibrant pink background with a bunch of colorful flowers and hearts scattered throughout. The flowers are in a variety of colors, including red, yellow, and pink, and the hearts are in shades of pink, purple, and blue. The image is animated, giving it a lively and cheerful feel.