bigly-chat/views/header_block.ejs

<div class='header'>
    <img src='/static/img/logo.svg'>
    <a href='/'>BiglyChat</a>
    <%if (username=='!nobody' ) { %>
        <div class="button"><a href="/client/login">Login</a></div>
        <% } else { %>
            <a href="/client/user?user=<%= username %>">
                <%= username %>
            </a>
            <% } %>
</div>