.option-box:empty {
  display: none;
}
.logout {
  width: 100rpx;
  height: 100rpx;
  text-align: center;
  border-radius: 50%;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  background-color: var(--red);
  color: white;
  position: fixed;
  bottom: 100rpx;
  right: 50rpx;
}

.scan {
  width: 100rpx;
  height: 100rpx;
  text-align: center;
  border-radius: 50%;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  background-color: var(--blue);
  color: white;
  position: fixed;
  bottom: 250rpx;
  right: 50rpx;
}