Barre de favoris verticale - Firefox 71

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* ne garde plus que les icône, pas les étiquettes */
#personal-bookmarks .toolbarbutton-text {
    display:none !important;
}

#PersonalToolbar {
    position: fixed !important;
    right: 0px !important;
    top: 35px !important;
    height: 35px !important;
    transform-origin: bottom right !important;
    transform: rotate(-90deg) !important;
    padding: 0 !important;
    margin: 0 !important;
    z-index: 1200 !important;
    display: block !important;
}

#browser,
#browser-bottombox {
    padding-right: 35px !important;
    height: 100% !important;
    background-color: #F9F9FA !important;
}

#personal-bookmarks {
    height: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    transform: rotate(180deg) !important;
    transform-origin: 50% 50% !important;
}
#personal-bookmarks .bookmark-item {
    transform: rotate(-90deg) !important;
    height: 100% !important;
    width: 35px !important;
}
#personal-bookmarks .bookmark-item .bookmark-item {
    width: 390px !important;
    transform: rotate(0deg) !important;
}

/* Hide the toolbar when in fullscreen mode */
#main-window[inFullscreen="true"] #PersonalToolbar {
  visibility: collapse !important;
}

#main-window[inFullscreen="true"] #browser,
#main-window[inFullscreen="true"] #browser-bottombox {
  margin-right: 0 !important;
}