preferences.html

<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <meta http-equiv='X-UA-Compatible' content='ie=edge'>
    <title>No Seen Extension</title>
    <style>
        body {
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
            font-family: -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
        }

        #main {
            background: #fff;
            border: 1px solid #ccc;
            padding: 30px;
            border-radius: 5px;
        }

        h1 {
            margin-top: 0;
        }

        button {
            font-size: 16px;
            padding: 5px 50px;
        }
    </style>
</head>

<body>
    <main id='main'>
        <p>⚠️ Does NOT work for Chrome at the moment. See <a href="https://github.com/diessica/no-seen/issues/2">issue on
                GitHub.
            </a></p>

        <h1>Preferences</h1>
        <h4>Enable for the following websites:</h4>

        <p>
            <input id='instagram' type='checkbox'>
            <label for='instagram'>Instagram</label>
        </p>

        <p>
            <input id='facebook' type='checkbox'>
            <label for='facebook'>Facebook</label>
        </p>

        <button type='button' id='save'>Save</button>
    </main>

    <script src='preferences.js'></script>
</body>

</html>