.dig-overlay {
  position: fixed;
  height: 100%;
  width: 100%;
  z-index: 9;
  top: 0px;

  left: -100%;
  background-color: rgba(0, 0, 0, 0);
  transform: transition(left 0ms $ease-out-function 400ms, background-color 400ms $ease-out-function 0ms);

  &.dig-is-shown {
    left: 0px;
    background-color: $light-black;
    transform: transition(left 0ms $ease-out-function 0ms, background-color 400ms $ease-out-function 0ms);
  }
}