>>950
適当
@-moz-document url("chrome://browser/content/browser.xul"){
#PersonalToolbar{
position:fixed; top:7.5em; left:2px !important;
border:none !important;
}

#PersonalToolbar[collapsed="true"] {
-moz-transition: none !important;
}
#PersonalToolbar:not([collapsed="true"]) {
visibility: hidden !important;
opacity: 0.5;
-moz-transition: visibility 1s, opacity 1s ease !important;
}
#navigator-toolbox:hover #PersonalToolbar:not([collapsed="true"]) {
visibility: visible !important;
opacity: 1;
-moz-transition: visibility !important;
}
}