<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse " id="navbarsExample08">
    <ul class="navbar-nav ">

      <li class="nav-item">
        <a class="nav-link" href="{% url 'blog:article-list' %}">Main Page</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="{% url 'blog:article-create' %}" >{{ one }}</a>
      </li>
    </ul>
  </div>
</nav>