.php-email-form .loading,
.php-email-form .error-message,
.php-email-form .sent-message {
  display: none; /* hide by default */
}

.php-email-form .loading {
  color: #555;
  text-align: center;
  padding: 10px;
  font-size: 14px;
}

.php-email-form .error-message {
  color: #fff;
  background: #ed3c0d;
  text-align: center;
  padding: 15px;
  font-weight: 600;
}

.php-email-form .sent-message {
  color: #fff;
  background: #18d26e;
  text-align: center;
  padding: 15px;
  font-weight: 600;
}