div.loader {
  position: fixed;
  top: 0;
  left: 0;
  background-color: var(--offwhite);
  width: 100vw;
  height: 100%;
  z-index: 100;
  overflow: hidden;

  display: flex;
  justify-content: center;
  align-items: center;

  transition: opacity 0.25s ease;
}

div.loader.hidden {
  opacity: 0;
  pointer-events: none;
}