URL: https://media.istockphoto.com/vectors/black-21-plus-icon-isolated-on-white-background-adults-content-icon-vector-id1264548344?k=20&m=1264548344&s=612x612&w=0&h=QFykpBJy8uIG0I7u3V1g_bJeQui1oKYAyn4lnumoLFA=
URL2: https://www.istockphoto.com/jp/イラスト/数字の21
