<canvas width="600" height="400"></canvas>
<script>
var tela = document.querySelector("canvas");
var pincel = tela.getContext("2d");
pincel.fillStyle = "darkgreen";
pincel.fillRect (0, 0, 350, 300);
pincel.fillStyle = "Black";
pincel.fillRect (50, 55, 90, 90);
pincel.fillRect (210, 55, 90, 90);
pincel.fillRect (140, 145, 70, 100);
pincel.fillRect (100, 190, 40, 110);
pincel.fillRect (210, 190, 40, 110);
</script>
