@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
.tabbrowser-tabs {
  display: -moz-inline-box !important;
  width: 30px !important;
  -moz-transform: rotate(90deg) !important; 
  -moz-transform-origin: bottom left !important;
}
.tabbrowser-strip {
  width: 667px !important;
  margin-right: -635px !important;
  margin-top: -38px !important;
}
.tabbrowser-tabs tab, .tabbrowser-tabs toolbarbutton {
  max-height: 30px !important;
  max-width: 30px !important;
}
#content > tabbox {
  -moz-box-orient: horizontal !important;
}
.tabbrowser-tabs stack stack {
  display: none !important; 
}