<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
>
</head>
<body>
<canvas width="600" height="400"></canvas>
<script>
var pantalla = document.querySelector('canvas');
var pincel = pantalla.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>
</body>
</html>
