Here's some code which i a short while ago wrote. I feel that it offers a simple explanation of combining course/ID names with pseudoclasses. div p select all p factors who're decedent of div component, Whilst div > p find only baby p factors, not grand kid, terrific grand etc. https://www.presta-addons-modules.com/en/free-modules/prestashop-whatsapp-chat-support.html