#canvas{
  background-color: rgb(67, 94, 175);
  width: 60vmin;
  height: 80vmin;
  margin: 19vmin auto 0 auto;
  position: relative;
}

#A{
  position: absolute;
  border-left: 20vmin;
  top: 22vmin;
  width: 43vmin;
  height: 58vmin;
  background-color: rgb(68, 142, 66);
}

#B{
  position: absolute;
  border-left: 20vmin;
  top: 52vmin;
  width: 23vmin;
  height: 28vmin;
  background-color: rgb(190, 80, 61);
}