.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--site-border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    margin: 0 auto 24px auto;
    animation: spin 1.2s linear infinite;
    transition: all 0.5s ease;
}

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