「HAPPY BDAY」は FontVibe AI で作成したバースデーの文字エフェクトです。白フチのくっきりした虹色ストライプの丸い大文字。紙吹雪と風船の束に囲まれ、ピンクからターコイズへの鮮やかなパーティー背景。

A WhatsApp sticker design on a flat pure black #000000 void, with no environment, backdrop or vignette. The words "HAPPY BDAY" are set in bold modern brush-script lettering on two lines: "HAPPY" on top, slightly smaller and tilted up about 6 degrees, and "BDAY" below, larger and dominant, on a bouncing baseline. Both words fill about 80% of the canvas width. The letters are thick and confident, laid down with a loaded round brush. They show lively thick-to-thin modulation, a rough dry-brush drag where strokes lift, and fast connected strokes with letters varying in size. Each letter is a different punchy, glossy colour: hot pink, tangerine orange, sunny yellow, turquoise, electric violet and lime. Each has a bright white highlight streak along the top edge of its strokes. Around the whole lettering runs a thick, crisp white die-cut sticker outline with a soft shadow just inside it, so the shape reads as a peel-off sticker. A dense burst of multicolor confetti (squares, streamers and dots) and two clusters of glossy balloons in pink, turquoise, yellow and violet frame the lettering. One cluster sits at the upper left and one at the lower right, with curling ribbons. Small white sparkles and short light streaks glitter around the letters. Everything is bright, luminous and saturated, with no dark or black elements in the design. All elements are attached to the lettering and merged by the white sticker border, with generous margin around the edges. No other text.