body {
  background-color: #f5f7fa;
  margin: 0;
  padding: 0;
  height: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  
}

/* 加载层样式 */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  animation: fadeOut 0.5s ease-in-out 0.5s forwards;
}

.loading-image {
  width: 100px; /* 可根据实际图片大小调整 */
  height: 100px;
}

@keyframes fadeOut {
  to {
      opacity: 0;
      visibility: hidden;
  }
}