Page Slug Body Class / Slug da página como classe

page-slug-body-class.php

<?php

// Page Slug Body Class
function add_slug_body_class( $classes ) {
  global $post;
    if ( isset( $post ) ) {
      $classes[] = $post->post_type . '-' . $post->post_name;
    }
  return $classes;
}
add_filter( 'body_class', 'add_slug_body_class' );