+@media (not -moz-mac-graphite-theme) and (not -moz-mac-lion-theme) and (not -moz-mac-yosemite-theme) {
+ /* this is a usable workaround to detect we're on Mac OS */
+ toolbox {
+ border: 1px solid blue !important;
+ }
+}
+
+@media not all and (-moz-mac-graphite-theme) and (-moz-mac-lion-theme) and (-moz-mac-yosemite-theme) {