'flip-link-hover', 'label' => esc_html__( 'Approach style ', 'approach' ), 'style_handle' => 'approach-stylesheet', ); // Register navigation block style . $navigation_style = array( 'name' => 'approach_menu_style', 'label' => esc_html__( 'Approach_menu_style', 'approach' ), 'style_handle' => 'approach-stylesheet', ); register_block_style( 'core/site-title', $link_hover_style ); register_block_style( 'core/navigation', $navigation_style ); } add_action('init', 'approach_register_block_styles',8 );