我想修改我主页上的html

<div id="slide-6996" class="slide slide-6996 cycle-slide-active slide-left light" style="background-image:url(http://18.205.33.160/wp-content/uploads/2019/02/ITData-Home-Page2018-01-edited.jpg);">
                <div class="slide-body">
                    <div class="container">
                        <div class="slide-caption">
                            <div class="slide-content">
                                <h1><strong>COMPREHENSIVE IT SERVICES YOU CAN TRUST</strong></h1>
                            </div>
                                <h2 class="slide-title"> Let us help you develop an IT Optimization Strategy and Define your technological priorities</h2>

        <a class="slide-link button button-medium" href="http://18.205.33.160/index.php/itone-method/"> Learn how we can help you succeed </a>
        <a class="post-edit-link" href="http://18.205.33.160/wp-admin/post.php?post=6996&amp;action=edit">Edit</a>                          </div>
            <div class="slide-image">
        </div>
    </div>
</div>

到位于此处的代码~>https://jsfiddle.net/2xb34dev/

然而，当我转到外观>编辑器时，我没有看到主页php文件，我只能修改页面模板（没有我试图修改的滑块）

解决问题/修改主页HTML代码的最佳方法是什么？