Reply To: change value Blog page h3 h4 h5

Here you have a list

\inc\widgets\class-widget-recent-posts.php http://prntscr.com/mjevly

\inc\integrations\woocommerce\template-tags.php http://prntscr.com/mjevfv

The comments form is a default WordPress function and located in comments.php and here is documentation that will help you to customize it https://developer.wordpress.org/reference/functions/comment_form/ http://prntscr.com/mjexuf