.fundou{ width:660px; height:５00５00px; background: radial-gradient(farthest-side circle at 100% 100%,transparent 45%,#dda0dd 45% 50%,transparent 50%) 0px 0px/20px 20px ,radial-gradient(farthest-side circle at 0% 0%,transparent 45%,#dda0d…