.registro-imagen {
  position: absolute;
  right: 0;
  top: 0;
  height: 100vh;
  width: 60%;
  background-image: url('');
  background-size: cover;
  background-position: center;
  z-index: 1;
  border-radius: 15px 0 0 15px;
}

.registro-form input, .registro-form select{
  background: transparent !important;
  color: #fff !important;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 1rem;
  width: 100%;
  margin-bottom: 15px;
  appearance: none; /* quita la flecha por defecto */
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
}

.registro-form select option[value=""] {
  color: rgba(255, 255, 255, 0.7);
}

.registro-form select option {
  background-color: #222;
  color: #fff;
}


.registro-form input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.registro-form input:focus, .registro-form select:focus {
  outline: none;
  border-color: #ff7e00;
  box-shadow: 0 0 0 0.25rem rgba(255, 126, 0, 0.25);
  background: rgba(255, 255, 255, 0.1);
}

.registro-form button:hover {
  background: #ff7e00;
}

@media (max-width: 1299px) {
  .registro-imagen {
    border-radius: 15px 0 0 15px;
  }
}

@media (max-width: 767px) {

  .registro-form {
    margin-top: 15vh;
  }

  .registro-imagen {
    position: relative;
    width: 100%;
    height: 350px;
    border-radius: 15px;
  }
}