<!DOCTYPE html>
<html>

    <head>
        <meta charset="UTF-8">
        <title>My Portfolio</title>
        <link rel="stylesheet" href="style.css">
        <!-- The core Firebase JS SDK is always required and must be listed first -->
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-app.js"></script>

        <!-- TODO: Add SDKs for Firebase products that you want to use
            https://firebase.google.com/docs/web/setup#available-libraries -->
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-analytics.js"></script>
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-database.js"></script>
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-messaging.js"></script>
        <script src="script.js"></script>
    </head>

    <body onload="init()">
        <div id="content"></div>
        <ul id="chat-as-list"></ul>
        <form>
            <!-- this button stops form submission on pressing enter
            which is not what we want because it reloads the page -->
            <button type="submit" disabled style="display: none" aria-hidden="true"></button>
            <input type="text" id="message-input" />
            <button type="button" onclick="pushChatMessage()" id="send-button">send</button>
        </form>
        <div id="messages"></div>
    </body>

</html>

<!DOCTYPE html>
<html>

    <head>
        <meta charset="UTF-8">
        <title>My Portfolio</title>
        <link rel="stylesheet" href="style.css">
        <!-- The core Firebase JS SDK is always required and must be listed first -->
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-app.js"></script>

        <!-- TODO: Add SDKs for Firebase products that you want to use
            https://firebase.google.com/docs/web/setup#available-libraries -->
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-analytics.js"></script>
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-database.js"></script>
        <script src="https://www.gstatic.com/firebasejs/7.15.4/firebase-messaging.js"></script>
        <script src="app.js"></script>
        <script src="script.js"></script>
    </head>

    <body onload="init()">
        <div id="content"></div>
        <ul id="chat-as-list"></ul>
        <!-- this button stops form submission on pressing enter
        which is not what we want because it reloads the page -->
        <input type="text" id="message-input" />
        <button type="button" onclick="pushChatMessage()" id="send-button">send</button>
        <div id="messages"></div>
    </body>

</html>

Remove form element from HTML.
Remove form element from HTML.
