.contact-flash {
    animation: contactFlash 150ms ease-in-out 0s 4 alternate;
  }
  
  @keyframes contactFlash {
    from { background-color: inherit; }
    to   { background-color: #ff4d4f; }
  }
  
  .contact-fade {
    opacity: 0;
    transform: scale(0.96);
    transition: opacity 220ms ease, transform 220ms ease;
  }