.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: rgb(147, 147, 147);
    border-radius: 50%;
    animation: spin 1s ease-in-out infinite;
    visibility: hidden;
}

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