blue Gradient

background-image: radial-gradient(
    circle 421px at 49.1% 100%,
    rgba(25,25,112,1) 0%, rgba(77,87,227,1) 16.5%, rgba(160,207,236,1) 30.3%, rgba(173,223,255,1) 53%, rgba(173,223,255,1) 76%, rgba(150,223,245,1) 90%
);