width: 1200px;
height: 500px;
background:
radial-gradient(circle at 50% 50%, rgba(255,69,203,0.51) 0%, rgba(0,0,0,0) 65.28%, rgba(69,168,255,0) 100%) -451px -321px / 1053px 782px no-repeat no-repeat, /* upper-left */
radial-gradient(ellipse at 50% 50%, rgba(151,255,69,0.51) 0%, rgba(0,0,0,0) 65.28%, rgba(69,168,255,0) 100%) 306px 148px / 1475px 611px no-repeat no-repeat, /* lower-right */
conic-gradient(from 26deg at 0% 0%, rgba(213,255,69,0.47) 0%, rgba(255,136,69,0.21) 45.49%, rgba(255,255,255,0) 72.22%) 0px 0px / 1200px 501px no-repeat no-repeat, /* large */
linear-gradient(-6deg, rgba(17,14,62,1) 0%, 42.01%, rgba(69,168,255,1) 100%) 0px 0px / 1200px 500px no-repeat no-repeat; /* main-bg */