<canvas width="600" height="400">
</canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "darkgreen"
pincel.fillRect(120,50,350,300);
pincel.fillStyle = "black";
pincel.fillRect(170,90,90,90);
pincel.fillStyle = "black";
pincel.fillRect(330,90,90,90);
pincel.fillStyle = "black";
pincel.fillRect(260,180,70,100);
pincel.fillStyle = "black";
pincel.fillRect(230,240,40,110);
pincel.fillStyle = "black";
pincel.fillRect(320,240,40,110);
</script>
