function msit_modify_comment_form_text_area($arg) { 	$arg['comment_field'] = '<div class="col-sm-12 col-md-12 col-lg-12">                                   <div class="form-in"><p class="comment-form-comment"><label for="comment">' . _x( 'Please explain. Write your comment here:', 'noun' ) . '</label></br><textarea id="comment" name="comment" cols="50" rows="1" aria-required="true"></textarea></p></div></div>'; 	return $arg; }   add_filter('comment_form_defaults', 'msit_modify_comment_form_text_area');