<canvas width="600" height="400"> </canvas>
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var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "lightgrey"
pincel.fillRect(0,0,600,400);
pincel.fillStyle = "darkgreen";
pincel.fillRect(120,45,350,300);
pincel.fillStyle = "black";
pincel.fillRect(170,100,90,90);
pincel.fillStyle = "black";
pincel.fillRect(328,100,90,90);
pincel.fillStyle = "black";
pincel.fillRect(260,190,70,100);
pincel.fillStyle = "black";
pincel.fillRect(210,230,50,110);
pincel.fillStyle = "black";
pincel.fillRect(330,230,50,110);
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