#canvas{
  background-color:  rgb(116,153,194);
  width:55vmin;
  height:56vmin;
  margin:20vmin auto 0 auto;
  position:relative;
  box-shadow: 0px 0px 14px black;
}

#secondring{
  position:absolute;
  left:7.5vmin;
  top:11.5vmin;
  width:40vmin;
  height:40.5vmin;
  background-color: rgb(138,148,152);
}

#thirdring{
  position:absolute;
  left:12.5vmin;
  top:19vmin;
  width:30vmin;
  height:30vmin;
  background-color: rgb(239,239,224);
}

#innerring{
  position:absolute;
  left:17.5vmin;
  top:26vmin;
  width:20vmin;
  height:20vmin;
  background-color: rgb(232,188,63);
}