Create a vibrant birthday-themed background featuring colorful balloons of various shapes and sizes, a large slice of cake with lit candles, and a scattering of confetti. Include a festive banner that says Happy Birthday in bold, cheerful letters. Use a sunny blue sky as the backdrop with a few fluffy white clouds to give it a joyful atmosphere. Add party hats and streamers intertwining around the edges for an extra festive touch.

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Create a vibrant birthday-themed background featuring colorful balloons of various shapes and sizes, a large slice of cake with lit candles, and a scattering of confetti. Include a festive banner that says Happy Birthday in bold, cheerful letters. Use a sunny blue sky as the backdrop with a few fluffy white clouds to give it a joyful atmosphere. Add party hats and streamers intertwining around the edges for an extra festive touch.