wordpress中元滑块的自定义导航箭头

Question

以下是自定义导航箭头的代码

<a class="left carousel-control" href="#topCarousel" data-slide="prev"><span class="glyphicon glyphicon-chevron-left"></span></a>
                    <a class="right carousel-control" href="#topCarousel" data-slide="next"><span class="glyphicon glyphicon-chevron-right"></span></a>

以下是滑块的PHP代码

<?php get_header( ); ?>


  <!--================top slider section starts====================-->
    <section id="home-content">
      <div class="row">
        <div class="container">
          <div class="col-lg-9 col-md-9 col-sm-8 col-xs-12">
             <!--==============main slider section starts==================-->
            <div class="slider box effect7">

              <?php 
                  echo do_shortcode("[metaslider id=20]"); 
              ?>



            </div>
            <!--==============main slider section ends==================-->

我需要发布更多代码

如何在meta滑块wordpress中添加它们; 请帮帮我