Navbar

You can change the header as follows:

  <li class="menu-item menu-item-has-children">
      <a href="index.html">Pages</a>
         <ul class="sub-menu">
                 <li><a href="page-about-us.html" class="nav-link">About Us</a></li>
                 <li><a href="page-team.html" class="nav-link">Team</a></li>
                 <li><a href="page-services.html" class="nav-link">Services</a></li>
                 <li><a href="page-contact.html" class="nav-link">Contacts</a></li>
                 <li><a href="page-404.html" class="nav-link">404</a></li>
          </ul>
  </li> 

.menu-item > a – main menu link

.sub-menu > li > .nav-link – main link of the dropdown menu