URL：https://media.istockphoto.com/id/1306293635/vector/circle-shape-ombre-pastel-color-backgrounds-set-for-label-tag-logo-background-gradation.jpg?s=612x612&w=0&k=20&c=fYa0vpgDYLkNXcK0L36HEk2b2O_Mx4EBbbv6P32DY-A=
掲載元：https://www.istockphoto.com/illustrations/yellow-ombre-background
