width: 800px;
height: 800px;
background:
radial-gradient(ellipse at 50% 50%, rgba(242,78,30,1) 70%, rgba(242,78,30,0) 70.5%) 193px 112px / 200px 200px no-repeat no-repeat, /* Red */
linear-gradient(rgba(242,78,30,1), rgba(242,78,30,1)) 296px 113px / 98px 198px no-repeat no-repeat, /* Red */
radial-gradient(ellipse at 50% 50%, rgba(229,102,88,1) 70%, rgba(229,102,88,0) 70.5%) 394px 112px / 200px 200px no-repeat no-repeat, /* Pink */
linear-gradient(rgba(229,102,88,1), rgba(229,102,88,1)) 394px 113px / 98px 198px no-repeat no-repeat, /* Pink */
radial-gradient(ellipse at 50% 50%, rgba(22,169,228,1) 70%, rgba(22,169,228,0) 70.5%) 393px 310px / 200px 200px no-repeat no-repeat, /* Blue */
radial-gradient(ellipse at 50% 50%, rgba(145,80,229,1) 70%, rgba(145,80,229,0) 70.5%) 193px 310px / 200px 200px no-repeat no-repeat, /* Purple */
linear-gradient(rgba(145,80,229,1), rgba(145,80,229,1)) 298px 311px / 96px 198px no-repeat no-repeat, /* Purple */
linear-gradient(rgba(1,186,118,1), rgba(1,186,118,1)) 292px 509px / 102px 100px no-repeat no-repeat, /* Green */
radial-gradient(ellipse at 50% 50%, rgba(1,186,118,1) 70%, rgba(1,186,118,0) 70.5%) 195px 508px / 200px 200px no-repeat no-repeat; /* Green */