How do we add captions to our featured image?

To add the caption in the Feature Image, you can open the function.php file in the folder path “\wp-content\themes\dw-focus”
then add the following code:

function the_post_thumbnail_caption() {
  global $post;

  $thumbnail_id    = get_post_thumbnail_id($post->ID);
  $thumbnail_image = get_posts(array('p' => $thumbnail_id, 'post_type' => 'attachment'));

  if ($thumbnail_image && isset($thumbnail_image[0])) {
    echo '<span class="wp_caption">'.$thumbnail_image[0]->post_excerpt.'</span>';
  }
}

– Open the content-single.php file,  find the line 18 then add the following code under line 18:

<?php the_post_thumbnail_caption(); ?>

Note: To style for the caption section, you can use the following code:

.single-post .entry-thumbnail .wp_caption {......}

Hope this helps !