e.Foundation website performance
If you open console in Firefox you can see messages like "The non-standard “zoom” property is used on this page. Try using calc () in the appropriate property values or use “transform” along with “transform-origin: 0 0” and “This site appears to be using a scroll-related positioning effect. This may not work very well with asynchronous panning; see https://developer.mozilla.org/docs/Mozilla/Performance/ScrollLinkedEffects for more information and to join the discussion on related tools and features!”
Edited by Arnau Vàzquez