.spinner {
    width: 100%;
    height: 100vh;
    position: fixed;
    left: 46%;
    right: 50%;
    bottom: 30%;
    top: 40%;
    z-index: 10;
}

.black {
    position: fixed;
    width: 100%;
    height: 100vh;
    background-color: black;
    opacity: 0.5;
    z-index: 4;
}