@media (max-width: 768px) {
    / I want to target the navbar brand/logo container */
    .navbar-brand {
        float: none !important;
        display: block !important;
        text-align: center !important;
        margin: 0 auto !important;
        width: 100% !important;
    }

    /* This targets the actual image inside the link */
    .navbar-brand img {
        display: inline-block !important;
        margin-left: auto !important;
        margin-right: auto !important;
    }
}