#canvas{
  background-color: rgb(43, 101, 189);
  width: 60vmin;
  height: 62vmin;
  margin: 19vmin auto 0 auto;
  position: relative;
  
}

#secondring{
  position:absolute;
  left: 10vmin;
  top: 15vmin;
  width: 40vmin;
  height: 41vmin;
  background-color: rgb(38, 88, 130)
  
}

#innerring{
  position:absolute;
  left: 10vmin;
  top: 15vmin;
  width: 20vmin;
  height: 21vmin;
  background-color: rgb(46, 103, 90)

}