.ajax-response {
    font-weight: bold;
    font-size: 16px;
}

.ajax-response.error {
    color: red;
}

.loader {
    border: 8px solid #ddd;
    border-top: 8px solid #222;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    margin-top: 30px;
    animation: spin 2s linear infinite;
}

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