<!DOCTYPE HTML>
<html>

<head>
    <meta charset="UTF-8">
    <title>Elm</title>
    <script type="text/javascript" src="Mask.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/elm-regl-js@1.3.4/dist/regl.js"></script>
    <link rel="stylesheet" href="style.css">
</head>

<body oncontextmenu="return false;">
    <div id="myapp"></div>
</body>

<script type="text/javascript">
    var app = Elm.Mask.init({
        node: document.getElementById('myapp')
    });
    if (app.ports