@media (max-width: 900px) {
  :root {
    font-size: 0.7rem;
    line-height: 2;
  }

  button {
    padding: 0 0.2rem;
  }

  label > span {
    min-width: 95px;
  }

  .input-container {
    flex: 4;
  }

  .button-container {
    min-width: 0;
    flex: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}