我在WordPress中设计了一个新主题。我使用引导菜单栏进行响应性设计，但在桌面模式下显示一个切换。

<div id="nav">
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>          
    </div>
    <?php
    wp_nav_menu( array(
            \'menu\'              => \'top-menu\',
            \'depth\'             => 2,
            \'container\'         => \'div\',
            \'container_class\'   => \'navbar-collapse collapse\',
            \'menu_class\'        => \'nav navbar-nav\',
            \'fallback_cb\'       => \'wp_bootstrap_navwalker::fallback\',
            \'walker\'            => new wp_bootstrap_navwalker())
        );
    ?>
  </div><!-- /.container-fluid -->
</nav>

add_theme_support(\'menu\');
require_once(\'wp-bootstrap-navwalker.php\');
register_nav_menus(
   array(
        \'top-menu\' => \'Top Menu Location\',
         \'mobile-menu\' => \'Mobile Menu Location\',
      ));