@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
/*
 * Integrate the tab-close button with the "List All Tabs"-button 
 * in case you've selected to show the tab-close button
 * at the end of the tab bar (value 3 for browser.tabs.closeButtons)
 */
.tabs-closebutton-box {
   margin-top: 2px;
   opacity: 1.0; /*A*/             /* Should match value of (B) */
   background-image: url(chrome://global/skin/icons/tab-middle.png);
   background-repeat: no-repeat;
}
.tabs-closebutton-box:hover {
   opacity: 1.0;
}
.tabs-alltabs-box {
   opacity: 1.0 !important; /*B*/  /* Should match value of (A) */
}