.backdrop {
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.loader {
    border: 6px solid #fff; /* Light grey */
    border-top: 6px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}