/* --- Comment out the section below to make the url-bar visible --- */
    /*
    #nav-bar {
        width: 0 !important; height: 0 !important;
        position: fixed !important; left: -1px !important; top: -1px !important;
        overflow: hidden !important; visibility: hidden !important;
    }
    /**/
    #navigator-toolbox > #nav-bar {
        opacity: 0 !important;  overflow: hidden !important;
        height: 0 !important; min-height: 0 !important; border-top: 0 !important;
        transition: .2s ease;
    }
    #navigator-toolbox:hover > #nav-bar {
        opacity: 1 !important; overflow: auto !important;
        height: var(--url-height) !important;
    }