@-moz-document url-prefix('http://www.tumblr.com'), url-prefix('https://www.tumblr.com')   { #popover_blogs .tab_notice:after{display:none}.l-header .iconic>a{background-image:url('http://25.media.tumblr.com/tumblr_ma8fnt9tgL1rgncooo1_250.png') !important;} 

  .tab_bar .iconic a.tab_anchor {
  background-size: 175px 36px;
}

}