#df-werkplaats-form { max-width:400px;margin:auto; }
.step { display:none; }
.step.active { display:block; animation:fadeIn .3s ease-in-out; }
@keyframes fadeIn { from{opacity:0;transform:translateY(10px);} to{opacity:1;transform:translateY(0);} }
button { margin-top:10px; }

#df-werkplaats-form input[name='kenteken'] {
  background-color: #FFD200;
  font-weight: bold;
  text-transform: uppercase;
}

#df-werkplaats-form input[name='kilometerstand'] {
  background-color: #000;
  color: #fff;
}