index.html

  
 <!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>WebGL Tutorial</title>
        <style>
canvas#view {
    display: block;
    width: 100%;
    height: 25em;
	background: radial-gradient(gray, transparent);
}
        </style>
    </head>
    <body>
        <canvas id="view"></canvas>
        <script src="script.js"></script>
    </body>
</html>