Mellow Yellow Birthday Card

Designed with a soft yellow rectangular banner placed across the middle, the card keeps the focus on a friendly birthday message. The banner carries the words “Happy Birthday” in smooth green lettering, centred and easy to read 🎂. Behind it, vertical stripes run top to bottom in mixed greens and blue-greens, blending deep jade and forest tones with lighter aqua and olive shades. Thin white lines separate the stripes, and the stripe edges gently wave like brushstrokes, giving the background an easy, human touch that feels inviting. A faint shadow under the banner adds a little depth, as if it’s resting on the striped backdrop. The calm, garden-like palette sets a cosy tone that can suit close friends or someone you’re sweet on 🎉. The background shows alternating green and teal stripes with narrow white gaps and softly uneven, painted-looking edges.