Create a vibrant birthday theme background featuring a colorful confetti explosion in various shapes, such as circles, stars, and hearts, cascading down the canvas. Include a whimsical banner that reads Happy Birthday in bold, playful typography adorned with cheerful balloon illustrations in multiple colors. Incorporate a subtle gradient of pastel colors transitioning from soft pink to light blue, and add decorative elements like gifts with shiny wrapping paper, party hats, and cheerful cake slices peeking from the corners to enhance the festive atmosphere.

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Create a vibrant birthday theme background featuring a colorful confetti explosion in various shapes, such as circles, stars, and hearts, cascading down the canvas. Include a whimsical banner that reads Happy Birthday in bold, playful typography adorned with cheerful balloon illustrations in multiple colors. Incorporate a subtle gradient of pastel colors transitioning from soft pink to light blue, and add decorative elements like gifts with shiny wrapping paper, party hats, and cheerful cake slices peeking from the corners to enhance the festive atmosphere.