.navbar-brand-centered {
        position: absolute;
        left: 50%;
        display: block;
        width: 160px;
        text-align: center;
        background-color: transparent;
    }
    .navbar>.container .navbar-brand-centered, 
    .navbar>.container-fluid .navbar-brand-centered {
        margin-left: -80px;
    }

    .btn-space {
        margin-right: 8px;
        margin-bottom: 8px;
    }

    body { padding-top: 70px; }