#fadeDiv{
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #00000050;
  z-index: 1090;
}

#fadeDiv > div{
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: #ffffff;
}