Edit file File name : class-wpcom-additional-css-manager.php Content :<?php /** * WPCOM_Additional_CSS_Manager file * * Is responsible with registering the Additional CSS section in WPCOM. * * @package automattic/jetpack-masterbar */ namespace Automattic\Jetpack\Masterbar; /** * Class WPCOM_Disable_Additional_CSS */ class WPCOM_Additional_CSS_Manager { /** * The site domain. * * @var string */ private $domain; /** * WPCOM_Additional_CSS_Manager constructor. * * @param string $domain the Site domain. */ public function __construct( $domain ) { $this->domain = $domain; } /** * Register the Additional CSS nudge. * * @param \WP_Customize_Manager $wp_customize_manager The core customize manager. */ public function register_nudge( \WP_Customize_Manager $wp_customize_manager ) { $nudge_url = $this->get_nudge_url(); $nudge_text = __( 'Purchase the Explorer plan to<br> activate CSS customization', 'jetpack-masterbar' ); $nudge = new CSS_Customizer_Nudge( $nudge_url, $nudge_text, 'jetpack_custom_css' ); $nudge->customize_register_nudge( $wp_customize_manager ); } /** * Get the nudge URL in WPCOM. * * @return string */ private function get_nudge_url() { return '/checkout/' . $this->domain . '/premium'; } } Save