#canvas {
  width: 90vmin;
  margin: 33vmin auto 4vmin auto;
  height: 68vmin;
  background-color: rgb(220, 63, 34);
  position:relative;
}

#green{
  left:1.5%;
  top:9%;
  width: 35%;
  height: 85%;
  background-color: rgb(71, 157, 59);
  position:absolute;
}