This flat-vector 4th birthday invitation centers on a two-tier pastel pink cake topped with four rainbow-striped candles, each with its own bright flame — yellow, sky blue, light green and grape — scattered across a clean white field with loose confetti dots. The bold, friendly sans lettering keeps the card cheerful and easy to read at a glance, perfect for a preschool or kindergarten birthday party. The palette is soft and candy-like: blush pink headlines, warm charcoal body text and pastel confetti accents in butter yellow, sky blue, mint and lavender. It suits a young child's birthday party for a boy or a girl, and works equally well for a small gathering at home or a party room at a play center. The matching guest page carries the candle-and-confetti theme end to end: a candle countdown with flickering rainbow flames, a tear-off wish-ticket RSVP with a stamped seal, a pastel confetti atmosphere drifting behind every section, and a simple map with directions and an add-to-calendar button. Guests reply with a clear yes, no or maybe in one tap, and hosts can personalize the date, time, venue and a personal message in minutes. Design highlights: a hand-lettered script accent for the kicker lines, bold geometric display type for the honoree's name, hard sticker-style offset shadows that echo the flat-vector artwork, and gentle animated confetti that never overwhelms the text. Because the design is light and clean, it photographs well and prints beautifully for save-the-date cards, thank-you notes or party decor. Customize the name, age and details, then share by link, text or email — the invitation is ready in minutes.