index.html

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<html lang="en">
<head>
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    <link rel="stylesheet" href="index.css">
    <script src="index.js"></script>
    <link rel="manifest" href="manifest.json">
    <title>Truth or Dare</title>
</head>
<body>

</body>
<div id="taskArea" class="shadow">
    Please click on a button
</div>
<div id="navigation">
    <button onclick="getNewTask('truth')" id="truth" class="button-shadow">Truth</button>
    <button onclick="getNewTask('dare')" id="dare" class="button-shadow">Dare</button>
</div>

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    if('serviceworker' in navigator) {
        navigator.serviceWorker.register('/service-worker.js')
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</script>
</html>