xmpp.chapril.org-conversejs/src/templates/chatarea.html

<div class="chat-area">
    <div class="chat-content"></div>
    <div class="new-msgs-indicator hidden">▼ {{ unread_msgs }} ▼</div>
    <form class="sendXMPPMessage" action="" method="post">
        {[ if (show_toolbar) { ]}
            <ul class="chat-toolbar no-text-select"></ul>
        {[ } ]}
        <textarea type="text" class="chat-textarea" 
            placeholder="{{label_message}}"/>
    </form>
</div>