Add Page Slug as Body Class

page-slug-body-class.php

<?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.

add_filter( 'body_class', 'wps_add_slug_body_class' );
/**
 * Add Page Slug as Body Class.
 */
function wps_add_slug_body_class( $classes ) {
	
	global $post;
	
	if ( isset( $post ) ) {

		$classes[] = $post->post_type . '-' . $post->post_name;

	}
	
	return $classes;

}