footer{
    display: flex;
    flex-direction: column;
}


/* 모바일 대응 */
@media (max-width: 600px) {
  footer > div {
    flex-direction: column;
    align-items: flex-start;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
  }
}