我有一个插件，为课程定制了帖子类型。我想自定义存档页帖子中的内容and style it. 我意识到存档页正在使用the_content() 检索帖子的内容，我可以使用相应的过滤器对其进行自定义；然而，它剥离了HTML，不允许我对其进行样式设置。我该如何度过这一关？

function eri_course_archive_content_filter($content) {
    if (is_post_type_archive( \'eri-courses\' )) {
        $content = (strlen($content) <= 140)? $content : wp_html_excerpt($content, 140);
        $extra = \'<div class="x-text">
                <ul class="x-ul-icons" style="padding-left: 1%;">
                    <li class="x-li-icon" style="padding-bottom: 1%;"><i class="x-icon-o-dollar-sign" aria-hidden="true" style="color: #47c3d3;" data-x-icon-o=""></i><strong>Cost:</strong>  \'.get_post_meta( get_the_ID() , \'_post_cost\', true ).\'</li>
                    <li class="x-li-icon" style="padding-bottom: 1%;"><i class="x-icon-o-clock" aria-hidden="true" style="color: #47c3d3;" data-x-icon-o=""></i><strong>Time:</strong> \'.get_post_meta( get_the_ID() , \'_post_time\', true ).\'</li>
                </ul>
            </div>\';
        return $content . $extra;
    } else {
        return $content;
    }
}
add_filter(\'the_content\', \'eri_course_archive_content_filter\');