Create a vibrant birthday theme background featuring a colorful confetti explosion with balloons of various shapes and sizes floating in the air. In the foreground, place a large, beautifully decorated cake adorned with candles that are lit and ready to be blown out. Surround the cake with party hats, streamers, and a banner that reads Happy Birthday! in bold, playful lettering. The backdrop should be a bright blue sky with fluffy white clouds, adding a festive and cheerful atmosphere.

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Create a vibrant birthday theme background featuring a colorful confetti explosion with balloons of various shapes and sizes floating in the air. In the foreground, place a large, beautifully decorated cake adorned with candles that are lit and ready to be blown out. Surround the cake with party hats, streamers, and a banner that reads Happy Birthday! in bold, playful lettering. The backdrop should be a bright blue sky with fluffy white clouds, adding a festive and cheerful atmosphere.