.form-response-message {
  display: none;
  margin: 20px auto 0 auto;
  max-width: 400px;
  padding: 16px 24px;
  border-radius: 8px;
  font-size: 1.1em;
  text-align: center;
  background: #f0f8ff;
  color: #222;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border: 1px solid #b3e5fc;
  transition: opacity 0.5s;
  opacity: 0;
  position: relative;
  z-index: 10;
}
.form-response-message.success {
  background: #e6ffed;
  color: #207245;
  border: 1px solid #b2f2bb;
}
.form-response-message.error {
  background: #fff0f0;
  color: #a94442;
  border: 1px solid #f5b2b2;
}