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.autocomplete-history-dropmarker.urlbar-history-dropmarker{ display:none!important;}
toolbarbutton:not([class*="tabs-alltabs-button"]) dropmarker {display: none !important;}

toolbarbutton:not([type="menu"]):hover dropmarker {display: -moz-box !important;}

toolbarbutton[type="menu"]:not([class*="bookmark-item"]) image {margin: 0px !important;}