<canvas width='600' height='400'> </canvas>
<script>
var tela = document.querySelector('canvas');
var pincel= tela.getContext('2d');
pincel.fillStyle = 'darkgreen';
pincel.fillRect(200,50,350,300);
pincel.fillStyle = 'black';
pincel.fillRect (250,110,90,90);
pincel fillRect (410,110,90,90);
pincel.fillRect (340,200,70,100);
pincel.fillRect(300,240,40,110);
pincel.fillRect(410,240,40,110);
</script>
