xarxaprod-wp-theme/archive.php

<?php
/**
 * The template for displaying archive pages
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package Xarxaprod_theme
 */

get_header();
?>

	<main id="primary" class="site-main">

			<header class="page-header">
				<h1><?php single_term_title( ' ' ); ?></h1>
			</header>

      <aside>
      <?php if( in_category('faq') ) : ?>
        <?php xarxaprod_display_faqs_labels();//display all faq subcategories as labels ?>
        <?php xarxaprod_display_faqs_search(); ?>
      <?php endif; //end if is_category faq ?>
      </aside>

    <?php if ( have_posts() ) : ?>

			<content class="archive-posts <?php xarxaprod_class_posttype(); ?>">
			<?php
			/* Start the Loop */
			while ( have_posts() ) :
				the_post();

				/*
				 * Include the Post-Type-specific template for the content.
				 * If you want to override this in a child theme, then include a file
				 * called content-___.php (where ___ is the Post Type name) and that will be used instead.
				 */
				get_template_part( 'template-parts/content', get_post_type() );

			endwhile;

			the_posts_navigation();
      echo '</content>';

		else :
			get_template_part( 'template-parts/content', 'none' );

		endif;

    ?>

	</main><!-- #main -->

<?php
get_sidebar();
get_footer();