.check-btn {
  display: block;
  position: relative;
  cursor: pointer;
  font-size: 22px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.check-btn input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  display: inline-block;
  top: 0;
  left: 0;
  padding: 0.75rem 1rem;
  background-color: var(--secondary-main);
  color: var(--primary-dark);
  border-radius: 100vmax;
  border: 1px solid var(--primary-dark);
  white-space: nowrap;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: lowercase;
}

.check-btn input:checked ~ .checkmark {
  background-color: var(--primary-dark);
  color: var(--secondary-main);
}