firefox-custom-style

userChrome.css

.bookmark-item .toolbarbutton-text {
	display: none !important;
}

#bookmarks-ptf toolbarbutton.bookmark-item:hover .toolbarbutton-text,
#bookmarks-ptf toolbarbutton.bookmark-item[image]:not([image=""]):not([container="true"]):hover .toolbarbutton-text,
#bookmarks-ptf toolbarbutton.bookmark-item[container="true"]:hover .toolbarbutton-text,
#bookmarks-ptf toolbarbutton.bookmark-item[image=""]:not([container="true"]):hover .toolbarbutton-text,
#personal-bookmarks toolbarbutton.bookmark-item:hover .toolbarbutton-text,
#personal-bookmarks toolbarbutton.bookmark-item[image]:not([image=""]):not([container="true"]):hover .toolbarbutton-text,
#personal-bookmarks toolbarbutton.bookmark-item[container="true"]:hover .toolbarbutton-text,
#personal-bookmarks toolbarbutton.bookmark-item:not([image]):not([container="true"]):hover .toolbarbutton-text,
#personal-bookmarks toolbarbutton.bookmark-item:hover .toolbarbutton-text-shadow,
#personal-bookmarks toolbarbutton.bookmark-item[image]:not([image=""]):not([container="true"]):hover .toolbarbutton-text-shadow,
#personal-bookmarks toolbarbutton.bookmark-item[container="true"]:hover .toolbarbutton-text-shadow,
#personal-bookmarks toolbarbutton.bookmark-item:not([image]):not([container="true"]):hover .toolbarbutton-text-shadow {
  display: block !important;
}

tab {
  background-color: #E3E4E6 !important;
}
tab[selected="true"] {
  color: #545557 !important;
  background-color: white !important;
  box-shadow: 0px 0px 0px transparent !important;
  border-style: solid !important;
  border-width: 0 0 2px 0 !important;
  border-color: #2A7CB1 !important;
}
.tabbrowser-tab:not(:hover) .tab-close-button{
	display:none !important;
}
.tabbrowser-tab:not([pinned]):hover .tab-close-button{
	display:block !important;
}
.tab-close-button{
	padding-left: 0px !important;
	margin-left: 0px !important;
}