{ -brand-name-firefox-devtools } now grays out CSS declarations that don’t have an effect on the page. When you hover over the info icon, you’ll see a useful message about why the CSS is not being applied, including a hint about how to fix the problem.
{ -brand-name-firefox-devtools } ora marca in gris le declarationes CSS sin effecto sur le pagina. Quando tu passa le mouse super le icone info, tu videra un message explicante proque le codice CSS non se applica, accompaniate de un suggestion pro resolver le problema.