<!DOCTYPE html>
<html lang="es" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title>Creeper</title>
</head>
<body>
    <canvas id="canvas" width="600" height="400">
    <style type="text/css">
        canvas{
            border: 1px solid black;
        }
    </style>
    </canvas>
<script type="text/javascript" src="creeper.js">
function draw() {
    var canvas = document.getElementById('canvas');
    if (canvas.getContext) {
      var ctx = canvas.getContext('2d');
      ctx.fillStyle = 'green';
      ctx.fillRect(0, 0, 350, 300);
      ctx.fillStyle= 'black';
      ctx.fillRect(50,60,90,90);
      ctx.fillStyle= 'black';
      ctx.fillRect(140,147,70,100);
      ctx.fillStyle='black';
      ctx.fillRect(210,60,90,90);
      ctx.fillStyle='black';
      ctx.fillRect(100,190,40,110);
      ctx.fillStyle='black';
      ctx.fillRect(210,190,40,110);
    }
  }
  draw();
</script>
</body>
</html>