.slide-vertical .char,
.slide-horizontal .char {
  overflow: hidden;
  color: transparent;
}
.slide-vertical .char:before, .slide-vertical .char:after,
.slide-horizontal .char:before,
.slide-horizontal .char:after {
  visibility: visible;
  color: #000000;
  transition: transform 0.5s cubic-bezier(0.9, 0, 0.2, 1);
  transition-delay: calc(0.2s + 0.02s * (var(--char-index)));
}
.slide-vertical .char:before,
.slide-horizontal .char:before {
  color: #000000;
  transition-delay: calc(0.02s * (var(--char-index)));
}
.slide-vertical:hover .char:before,
.slide-horizontal:hover .char:before {
  transition-delay: calc(0.2s + 0.02s * (var(--char-index)));
}
.slide-vertical:hover .char:after,
.slide-horizontal:hover .char:after {
  transition-delay: calc(0.02s * (var(--char-index)));
}

.slide-vertical .char:before {
  transform: translateY(-100%);
}
.slide-vertical:hover .char:before {
  transform: translateY(0%);
}
.slide-vertical:hover .char:after {
  transform: translateY(100%);
}