@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

.tabbrowser-tab .tab-close-button, 
.tabbrowser-tab .tab-icon-image {
  display: -moz-box !important;
  visibility: visible !important;
}
.tabbrowser-tab[first-tab="true"][last-tab="true"] .tab-close-button {
  visibility: hidden !important;
}
.tabbrowser-tab .tab-close-button {
  -moz-box-ordinal-group: 9 !important;
  margin-left: 0 !important;
  margin-right: 1px !important;
  opacity: 0.8 !important;
}
window:not([active="true"]) .tabbrowser-tab .tab-close-button {
  opacity: 0.6 !important;
}
.tabbrowser-tab .tab-close-button:hover {
  opacity: 1 !important;
}
.tabbrowser-tab .tab-text {
  margin-left: 0 !important;
  margin-right: 0 !important;
  padding-left: 4px !important;
  padding-right: 1px !important;
}