in Gecko chrome there is -moz-bool-pref it Evaluates to true if the preference is enabled, false otherwise.
for example
@media (-moz-bool-pref: "removePopupBorder") {
...
}
if in the about:config i set removePopupBorder to true the code will run
if i set removePopupBorder to false the code will not run
now if i have multiple valid values for removePopupBorder like auto , then , none
every one of these can run different codes
how can i check what is removePopupBorder value
the -moz-bool-pref only works with boolean values true or false but how can i work with strings or numbers