hello.html

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Calvin and Hobbes Explorer</title>
    <style>
        body {
            font-size: 12px;
            font-family: Arial;
            text-align: center;
        }
    </style>
    <script src="popup.js" type="text/javascript"></script>
</head>
<body>
<h1>Calvin and Hobbes Explorer</h1>
<img alt="Calvin&Hobbes" id="gif" src="calvin_and_hobbes.gif">
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<div id="comic"></div>
</body>
</html>