It seems to work on my machine, but maybe I didn't understand the problem correctly, or it's a platform-specific issue. I have a feeling that fadein
could be causing the trouble, because it's ""
inside the playing tab instead of true
. You could try something like this, maybe it'll work:
@media not -moz-pref("sidebar.verticalTabs") {
#tabbrowser-arrowscrollbox[orient="horizontal"] {
/* Horizontal tab size for ungrouped tabs */
&>.tabbrowser-tab[fadein]:not([style^="max-width"]),
&>.tabbrowser-tab[fadein=""]:not([style^="max-width"]) {
max-width: 168px !important;
}
/* Horizontal tab size for grouped tabs */
&>tab-group:not([collapsed]) .tabbrowser-tab[fadein]:not([style^="max-width"]),
&>tab-group:not([collapsed]) .tabbrowser-tab[fadein=""]:not([style^="max-width"]) {
max-width: 168px !important;
}
}
}