.footer {
  background-color: #ffffff;
  /* 深色背景 */
  color: black;
  /* 字体颜色 */
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  width: 100%;
  height: 190px;
  display: flex;
  align-items: center;

}

.footer a {
  color: black;
  text-decoration: none;
  margin: 0 10px;
  transition: color 0.3s;
}

.footer a:hover {
  color: #7f7f7b;
}

.footer-nav {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}