body{
  background:
radial-gradient(circle at 50% 100%, rgb(0,84,166) 30%, transparent 30%) 0px -10px,
radial-gradient(circle at 50% 0%, rgb(0,84,166) 30%, transparent 30%) 50px -10px,
radial-gradient(circle at 50% 50%, rgb(0,114,188) 50%, transparent 30%) 0px -50px,
radial-gradient(circle at 50% 50%, rgb(0,114,188) 50%, transparent 30%) 50px 10px









;

background-color: darkgreen;
background-size:100px 180px;
  
}