パンくずリスト

<?php wp_reset_postdata(); ?>
<div class="breadcrumbs" typeof="BreadcrumbList" vocab="https://schema.org/">
<?php if(function_exists('bcn_display')) { bcn_display(); } ?>
</div>

中身

<?php the_title(); ?>

<?php the_time('Y/m/d'); ?>

<?php
$categories = get_the_category();
foreach($categories as $category) {
    $slug = $category - > slug;
    echo '<a href="'.get_category_link($category - > term_id).
    '" class="'.$slug.
    '">'.$category - > name.
    '</a>';
} ?>

<?php the_content(); ?>