#preloader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100%;
  background: rgb(0 0 0 / 16%);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  transition: opacity 0.3s linear;
}