#canvas{
  background-color: rgb(255, 255, 255);
  width: 54vmin;
  height: 70vmin;
  margin: 20vmin auto 0 auto;
  position: relative;
  box-shadow: 0px, 0px, 2px, black;
}

#a{
  position:absolute;
  left: 0vmin;
  top: 0vmin;
  width: 54vmin;
  height: 70vmin;
  background-color: rgb(79, 102, 176);

}

#b{
  position:absolute;
  left: 0vmin;
  top: 15vmin;
  width: 39vmin;
  height: 55vmin;
  background-color: rgb(89, 136, 69);
}

#c{
  position:absolute;
  left: 0vmin;
  top: 44vmin;
  width: 19vmin;
  height: 26vmin;
  background-color: rgb(183, 84, 64);;
}