/* 로딩 스피너 */

.spinner {

    margin: 20px auto;

    width: 20px;

    height: 20px;

    border: 3px solid #ccc;

    border-top: 4px solid #ddd;

    border-radius: 50%;

    animation: spin 0.8s linear infinite;

}

@keyframes spin {

    0% { transform: rotate(0deg); }

    100% { transform: rotate(360deg); }

}