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

#nav-bar:not(:focus-within) {
    transition: margin-top 0.05s;
    margin-top: -28px !important;
    opacity: 0 !important;
}

#urlbar {
    visibility: collapse !important;
}

#TabsToolbar {
    visibility: collapse !important;
}

#PanelUI-menu-button {
    display: none;
}

#back-button, #forward-button {
    display: none;
}