Test. That kind of blind targetting is rarely what you wish in CSS for just about anything but probably the most normal styles. The administration can opt to help or disable currency and language auto-change capabilities. Also, change the default retail store currency and language from the module management page. https://www.presta-addons-modules.com/en/free-modules/prestashop-popup-on-exit-page-on-browser-tab-close-event.html