width: 500px;
height: 500px;
background:
radial-gradient(ellipse at 50% 50%, rgba(255,255,255,0) 68%, rgba(255,255,255,1) 68.2%) 0px 0px / 500px 500px no-repeat no-repeat, /* Mask */
radial-gradient(ellipse at 0% 0%, rgba(235,26,52,1) 57%, rgba(235,26,52,0) 57.2%) -150px -150px / 700px 700px no-repeat no-repeat, /* Red */
linear-gradient(165deg, rgba(255,255,255,1) 55%, rgba(255,255,255,0) 55.2%) -31px 168px / 350px 350px no-repeat no-repeat, /* White Line */
radial-gradient(circle at -12% -61%, rgba(255,255,255,1) 55%, rgba(255,255,255,0) 55.2%) 286px 231px / 205px 192px no-repeat no-repeat, /* White Connector */
radial-gradient(circle at 50% 50%, rgba(255,255,255,1) 55%, rgba(255,255,255,0) 55.2%) 144px -11px / 350px 350px no-repeat no-repeat, /* White Circle */
linear-gradient(0deg, rgba(34,81,161,1) 0%, rgba(34,81,161,1) 100%) 0px 0px / 500px 500px no-repeat no-repeat; /* New Background */