<canvas width = '600' height="400"></canvas>
<script type="text/javascript">
var tela = document.querySelector('canvas');
var pincel = tela.getContext('2d');
pincel.fillStyle = 'lightgrey';
pincel.fillRect(0, 0, 600, 400);
pincel.fillStyle = 'darkgreen';
pincel.fillRect(116.6, 50, 350, 300);
pincel.fillStyle = 'black';
pincel.fillRect(160, 110, 90, 90);
pincel.fillRect(320, 110, 90, 90);
pincel.fillRect(250, 200, 70, 100);
pincel.fillRect(210, 240, 40, 110);
pincel.fillRect(320, 240, 40, 110);
</script>
