{% with request.resolver_match.url_name as url_name %}

<ul class="navbar-nav">
<ul class="nav nav-pills ml-auto p-2">
  <li class="nav-item"><a class="nav-link" style="{% if url_name == 'group_policies' %}background: rgb(0 123 255); color: white{% endif %}" href="{% url 'grouppolicy:group_policies' %}" >Персонализация</a></li>
  <li class="nav-item"><a class="nav-link" style="{% if url_name == 'network_resources' %}background: rgb(0 123 255); color: white{% endif %}" href="{% url 'grouppolicy:network_resources' %}" >Сетевые ресурсы</a></li>
  <li class="nav-item"><a class="nav-link" style="{% if url_name == 'system_settings' %}background: rgb(0 123 255); color: white{% endif %}" href="{% url 'grouppolicy:system_settings' %}" >Системные настройки</a></li>
  <li class="nav-item"><a class="nav-link" style="{% if url_name == 'security' %}background: rgb(0 123 255); color: white{% endif %}" href="{% url 'grouppolicy:security' %}" >Безопасность</a></li>
</ul>
</ul>
{% endwith %}