.transition-1 {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 101;
  background-color: #ff0000;
  opacity: 0;
  pointer-events: none;
  transition: 0.5s ease-in;
}

.transition-1.is-active {
  opacity: 1;
  pointer-events: all;
}