<canvas width="350" height="300"> </canvas>
<script>
var tela = document.querySelector('canvas');
var pincel = tela.getContext('2d');
//1
pincel.fillStyle = 'darkgreen';
pincel.fillRect(0, 0, 350, 300);
// 2
pincel.fillStyle = 'black';
pincel.fillRect(50, 60, 90, 90);
//3
pincel.fillRect(210, 60, 90, 90);
//4
pincel.fillRect(140, 150, 70, 100);
//5
pincel.fillRect(100, 190, 40, 110);
//6
pincel.fillRect(210, 190, 40, 110);
</script>
