@keyframes anim-fade-in {
  from {opacity: 0;}
  to {opacity: 1;}
}

@keyframes anim-visible {
  from {
    opacity: 0;
    visibility: hidden;
  }
  to {
    opacity: 1;
    visibility: visible;
  }
}

@keyframes anim-invisible {
  from {
    opacity: 1;
    visibility: visible;
  }
  to {
    opacity: 0;
    visibility: hidden;
  }
}