body{background-color:#300;background-image:radial-gradient(circle,#4a0000 10%,transparent 11%),radial-gradient(circle at bottom left,#4a0000 5%,transparent 6%),radial-gradient(circle at bottom right,#4a0000 5%,transparent 6%),radial-gradient(circle at top left,#4a0000 5%,transparent 6%),radial-gradient(circle at top right,#4a0000 5%,transparent 6%);background-size:20px 20px}