#canvas{
  background-color: rgb(39, 93, 185);
  width: 60vmin;
  height: 62vmin;
  margin: 15vmin auto 0 auto;
  position: relative;
  box-shadow: 0px 0px 2px black;    
}

#secondring{
  position: absolute;
  left: 7vmin;
  top: 11vmin;
  width: 45vmin;
  height:47vmin;
  background-color: rgb(38, 87, 129);
}
  
#innerring{
    position: absolute;
    left: 18vmin;
    top: 27vmin;
    width: 23vmin;
    height: 25vmin;
    background-color: rgb(44, 100, 85);  
  
}