.heart-effect {
  position: absolute;
  font-size: 24px;
  color: red;
  animation: floatUp 1s ease-out forwards;
}
@keyframes floatUp {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(-100px);
    opacity: 0;
  }
}