<meta charset="UTF-8">
<canvas width="600" height="400"></canvas>
<script>
let screen = document.querySelector("canvas");
let brush = screen.getContext("2d");
brush.fillStyle = "white";
brush.fillRect(0, 0, 600, 400);
brush.fillStyle = "darkgreen";
brush.fillRect(100, 100, 350, 300);
brush.fillStyle = "black";
brush.fillRect(147, 155, 90, 90);
brush.fillStyle = "black";
brush.fillRect(305, 155, 90, 90);
brush.fillStyle = "black";
brush.fillRect(236, 243, 70, 100);
brush.fillStyle = "black";
brush.fillRect(200, 288, 40, 110);
brush.fillStyle = "black";
brush.fillRect(300, 288, 40, 110);
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