This design features a graphic design with a festive theme. At the center, there is a large, bold text that reads "Happy Birthday" in a decorative font. Above this text, there is a smaller text that says "21st," indicating the age of the birthday person. Surrounding the central text are various decorative elements, including stars and what appear to be fireworks, adding to the celebratory atmosphere. The background of the image is white, which contrasts with the black text and decorations, making them stand out. The overall style of the image is celebratory and festive, suitable for a birthday greeting.