The image features a festive banner with the words "Happy Birthday" written across it. The banner is composed of multiple colorful triangular flags, each bearing the word "Birthday" in a different color. The flags are arranged in a horizontal line, creating a cheerful and celebratory atmosphere. The background of the image is plain white, which contrasts with the vibrant colors of the flags, making the banner stand out prominently. The overall design is simple yet effective in conveying a birthday celebration.