Adds a unique body class to the editor screen of a specific page, in this case the home page

admin-body-class-home.php

add_filter( 'admin_body_class', 'ssm_home_admin_body_class' );
/*
 * Adds a body class to target the home page edit screen
 *
 */
function ssm_home_admin_body_class( $classes ) {
	global $post;
	$screen = get_current_screen();
	$homepage = get_page_by_title( 'Home' );

	if ( 'post' == $screen->base && ( $post->ID == $homepage->ID ) ) {
		$classes .= 'front-page';
	} 
	
	return $classes;
		
}