.spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
}

#SpinnerOverlay {
    display: none
}

.spinner:before {
    content: "";
    box-sizing: border-box;
    position: absolute;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 4px solid #ccc;
    border-top-color: #333;
    animation: spin 0.8s infinite linear;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9998;
}