Extra_related_posts_theme_builder.html

<div class="new-related">
<?php
						$related_posts = extra_get_post_related_posts();

						if ( $related_posts && extra_is_post_related_posts() ) {  ?>
						<div class="et_extra_other_module related-posts">
							<div class="related-posts-header">
								<h3><?php esc_html_e( 'Related Posts', 'extra' ); ?></h3>
							</div>
							<div class="related-posts-content clearfix">
								<?php while ( $related_posts->have_posts() ) : $related_posts->the_post(); ?>
								<div class="related-post">
									<div class="featured-image"><?php
									echo et_extra_get_post_thumb( array(
										'size'                       => 'extra-image-small',
										'a_class'                    => array('post-thumbnail'),
										'post_format_thumb_fallback' => true,
										'img_after'                  => '<span class="et_pb_extra_overlay"></span>',
									));
									?></div>
									<h4 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h4>
									<p class="date"><?php extra_the_post_date(); ?></p>
								</div>
								<?php endwhile; ?>
								<?php wp_reset_postdata(); ?>
							</div>
						</div>
						<?php } ?>
</div>
<style>
.custom-sidebar h4.widgettitle {
    display: none;
    }
.custom-sidebar .widget_execphp {
    width: 100% !important;
    box-shadow: none;
}
.custom-sidebar .et_extra_other_module.related-posts, .custom-sidebar.et_pb_widget_area, .custom-sidebar .related-posts-header {
    border: none;
    box-shadow: none;
}
</style>