themes-wordpress/libretto/archive.php

<?php
/**
 * The template for displaying Archive pages.
 *
 * Learn more: http://codex.wordpress.org/Template_Hierarchy
 *
 * @package Libretto
 */
get_header();
?>

<section id="primary" class="content-area">
	<div id="content" class="site-content" role="main">

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

		<?php /* Start the Loop */ ?>
		<?php while ( have_posts() ) : the_post(); ?>

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

		<?php endwhile; ?>

		<?php libretto_content_nav( 'nav-below' ); ?>

	<?php else : // If there are no posts ?>

		<?php get_template_part( 'no-results', 'archive' ); ?>

	<?php endif; ?>

	</div><!-- #content -->
</section><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>