gn-items-center justify-content-between flex-grow-1">

                    <ul class="navbar-nav navbar-nav-right mr-0 ml-auto">
                        <li class="nav-item ">
                            <span><a href="{% url 'language' 'zh-Hans' %}"><i class="flag-icon flag-icon-cn" title="cn" id="cn"></i></a></span>
                            <span><a href="{% url 'language' %}"><i class="flag-icon flag-icon-us" title="us" id="us"></i></a></span>
                        </li>
                        <li 