/* 初始方形导航栏 */
.nav-container {
  width: 90%; /* 和 waikuango 宽度一致 */
  height: 150px;
  
  display: flex;
  justify-content: center;
  align-items: center;
 
  z-index: 10;
  transition: all 0.5s ease;
  border-radius: 10px;
  margin-top: 20px;
}

/* 每个按钮 */
.nav-button {
  width: 17vw;
  height: 5vw;
  background-color: #f7d6ce;
  border-radius: 8px;
  margin: 1vw;
  color: white;
  font-size: 1.3vw;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.3s ease;
  text-align: center;
}