.background-spinner {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.spinner {
    margin-left: auto;
    margin-right: auto;
    width: 150px;
    color: rgba(0, 0, 0, 1);
    text-align: center;
    margin-top: 20%;
}