<!-- <h1 class="main-title"><?= theme_archive_title() ?></h1>
<p class="main-decription">
    <?php
    if (category_description() != ''):
        echo category_description();
    endif; ?>
</p> -->

<?php
$termchildren = get_terms(
    'category',
    array(
        'parent' => get_queried_object_id(),
    )
);

?>