.checkbox {
  appearance: none;
  width: 30px;
  aspect-ratio: 1;
  border-radius: 8px;
  border: 2px solid black;
  position: relative;
  transition: all 0.2s ease-in-out;
}

.checkbox::before {
  font-family: "Quicksand", sans-serif;
  position: absolute;
  bottom: -4px;
  left: 1px;
  content: "✔";
  font-size: 40px;
  color: rgb(255, 153, 0);
  transform: scale(0);
  transition: all 0.2s ease-in-out;
}

.checkbox:checked::before {
  animation: zoom 0.5s ease-in-out;
  transform: scale(1);
}

@keyframes zoom {
  0% {
    transform: scale(0);
  }

  20% {
    transform: scale(1.5);
  }

  40% {
    transform: scale(0.5);
  }

  50% {
    transform: scale(1);
  }

  70% {
    transform: scale(1.2);
  }

  90% {
    transform: scale(0.8);
  }

  100% {
    transform: scale(1);
  }
}