@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul); 
/*░▒▓▌Autohide_Bookmarks _Text▐▓▒░*/
#PlacesToolbarItems>toolbarbutton:not(:hover):not([open="true"])>.toolbarbutton-text {visibility:collapse !important; opacity:0!important;}
#PlacesToolbarItems>toolbarbutton>.toolbarbutton-text {-moz-transition:ease opacity .2s!important}