#error {
    background-color: #ffffffdd;
    border-radius: 16px;
    padding: 16px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate3d(-50%, -50%, 0);
    transition: opacity 0.3s;
  }
  #error.hide {
    opacity: 0;
    visibility: hidden;
    transition: visibility 2s, opacity 1s 1s;
  }