Reklama po pierwszym wpisie

Witam chciałbym dodać reklamę po pierwszym wpisie na swoją stronę, żadne poradniki nie działają na mój plik index.php. Proszę o pomoc 🙂

<?php get_header(); ?>
<div class="art-layout-wrapper">
    <div class="art-content-layout">
        <div class="art-content-layout-row">
            <div class="art-layout-cell art-content">
			<?php get_sidebar('top'); ?>
			<?php
				if(have_posts()) {

					/* Display navigation to next/previous pages when applicable */
					if ( theme_get_option('theme_' . (theme_is_home() ? 'home_' : '') . 'top_posts_navigation' ) ) {
						theme_page_navigation();
					}

					/* Start the Loop */
					while (have_posts()) {
						the_post();
						get_template_part('content', get_post_format());
					}

					/* Display navigation to next/previous pages when applicable */
					if (theme_get_option('theme_bottom_posts_navigation')) {
						 theme_page_navigation();
					}

				} else {

					 theme_404_content();

				}
		    ?>
			<?php get_sidebar('bottom'); ?>
              <div class="cleared"></div>
            </div>
            <div class="art-layout-cell art-sidebar1">
              <?php get_sidebar('default'); ?>
              <div class="cleared"></div>
            </div>
        </div>
    </div>
</div>
<div class="cleared"></div>
<?php get_footer(); ?>