.fade-in {
  animation: fadeIn 0.6s ease-in forwards;
  opacity: 0;
}
@keyframes fadeIn {
  to {
    opacity: 1;
  }
}
.hover-lift {
  transition: all 0.3s ease;
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 12px 12px 0 #000;
}
.code-block {
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
}