<figure class="featured-image">
<?php if(is_sticky()) : ?>
<sup>
<?php _e( 'Featured', GKTPLNAME ); ?>
</sup>
<?php endif; ?>
<?php the_post_thumbnail(); ?>
<?php if(is_single() || is_page()) : ?>
<?php echo gk_post_thumbnail_caption(); ?>
<?php endif; ?>
</figure>