.form-enter {
  opacity: 0.01;
  transition: opacity 1s ease-in;
}

.form-enter.form-enter-active {
  opacity: 1;
}

.form-leave {
  opacity: 1;
  transition: opacity 1s ease-in;
}

.form-leave.form-leave-active {
  opacity: 0.01;
}