#canvas{
  background-color: rgb(76, 99,175);
  width: 55vmin;
  height: 75vmin;
  margin: 19vmin auto 0 auto;
  position: relative;
}

#secondring{
  position:absolute;
  left: 0vmin;
  top: 20vmin;
  width: 40vmin;
  height: 55vmin;
  background-color: rgb(92, 139, 72)
}

#innerring{
  position:absolute;
  left: 0vmin;
  top: 45vmin;
  width: 20vmin;
  height: 30vmin;
  background-color: rgb(176, 88, 64) 
}