@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
.tabbrowser-tab[fadein]:not([pinned]) {
    max-width: 250px !important;
    min-width: 26px !important;
}
.tabbrowser-tab[fadein][selected]:not([pinned]) {
    min-width: 88px !important;
}
#tabbrowser-tabs ~ #alltabs-button {
    visibility: visible !important;
}