#loginLoader {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.6);
    z-index: 9999;
}

    #loginLoader .spinner-border {
        width: 3rem;
        height: 3rem;
    }