themes-wordpress/apostrophe-2/search.php

<?php
/**
 * The template for displaying search results pages.
 *
 * @package Apostrophe 2
 */

get_header(); ?>

	<section id="primary" class="content-area">

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

			<header class="page-header">
				<h1 class="page-title"><?php printf( esc_html__( 'Search Results for: %s', 'apostrophe-2' ), '<span>' . get_search_query() . '</span>' ); ?></h1>
			</header><!-- .page-header -->

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

				<div id="posts-wrapper">

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

						<?php
						/**
						 * Run the loop for the search to output the results.
						 * If you want to overload this in a child theme then include a file
						 * called content-search.php and that will be used instead.
						 */
						get_template_part( 'content', 'search' );
						?>

					<?php endwhile; ?>

				<?php else : ?>

					<?php get_template_part( 'content', 'none' ); ?>

				<?php endif; ?>

			</div><!-- #posts-wrapper -->

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

		<?php the_posts_navigation(); ?>

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

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