Create a vibrant birthday theme background featuring a colorful balloon arch with balloons in shades of pink, blue, yellow, and green. In the foreground, place a large, cheerful birthday cake adorned with sprinkles and candles, surrounded by confetti and party hats. The backdrop should include a sunny sky with fluffy white clouds and a festive banner that reads Happy Birthday! in playful, bold letters. Add a few cheerful cartoon animals like a bunny and a bear holding party gifts to enhance the joyful atmosphere.

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Create a vibrant birthday theme background featuring a colorful balloon arch with balloons in shades of pink, blue, yellow, and green. In the foreground, place a large, cheerful birthday cake adorned with sprinkles and candles, surrounded by confetti and party hats. The backdrop should include a sunny sky with fluffy white clouds and a festive banner that reads Happy Birthday! in playful, bold letters. Add a few cheerful cartoon animals like a bunny and a bear holding party gifts to enhance the joyful atmosphere.