.intro {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 99;
  background-color: #fff;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: 1.5s ease-in-out;
}

.intro.active {
  opacity: 1;
}

.intro img {
  margin: auto;
  transition: 1.5s ease-in-out;
  transform: scale(10);
}

.intro.active img {
  transform: scale(1);
}