<canvas width="600" height="400"> </canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "darkgreen"; //rectangulo 1
pincel.fillRect(0,0,350,300);
pincel.fillStyle = "black"; //rectangulo2
pincel.fillRect(210,60,90,90);
pincel.fillStyle = "black"; //rectangulo3
pincel.fillRect(50,60,90,90);
pincel.fillStyle = "black"; //rectangulo4
pincel.fillRect(140,150,70,100);
pincel.fillStyle = "black"; //rectangulo5
pincel.fillRect(100,190,40,110);
pincel.fillStyle = "black"; //rectangulo6
pincel.fillRect(210,190,40,110);
</script>
