我尝试动态添加一个菜单，css ul/li链接的结构如下所示

            <ul class="navbar-nav ml-auto">
              <li class="nav-item">
                  <a class="nav-link tm-nav-link" href="#infinite">Home</a>
              </li>
              <li class="nav-item">
                  <a class="nav-link tm-nav-link" href="#whatwedo">What We Do</a>
              </li>
              <li class="nav-item">
                <a class="nav-link tm-nav-link" href="#testimonials">Testimonials</a>
              </li>
              <li class="nav-item">
                  <a class="nav-link tm-nav-link" href="#gallery">Gallery</a>
              </li>
              <li class="nav-item">
                  <a class="nav-link tm-nav-link" href="#contact">Contact</a>
              </li>                    
            </ul>
          </div>        
        </div>
      </nav> 

我试着注册

  <?php
              wp_nav_menu(array(
              "theme_location" => "",
                  \'menu_class\'=> \'navbar-nav ml-auto\'
              \'container_class\' => \'navbar navbar-expand-md tm-navbar\')); ?>     

但只知道如何将类添加到<ul> 但不是所有人<li> 因为我的导航菜单看起来很丑，所以这会造成很大的问题。

.navbar-nav.ml-auto > li {
   background: yellow;
}

.navbar-nav.ml-auto > li > a {
   color: blue;
}