- We provide free of charge specialized and feature support in installation and configuration, together with use of updates readily available for this item. These are generally all recognized in CSS as at-principles. They are special Guidelines to the browser, in a roundabout way connected with styling of (X)HTML/XML elements https://get-social-now.com/story4691093/5-simple-techniques-for-prestashop-seo-friendly-url-pretty-url-without-id-number