fields */
  .controls.full-width input,
  .controls.full-width textarea,
  .controls.full-width select {
    width: 100%;
  }

  /* Error styling */
  .invalid-feedback {
    color: #dc3545;
    display: block;
    margin-top: 0.25rem;
  }

  /* Button styling */
  button[type="submit"],
  input[type="submit"] {
    background-color: #28a745;
    border-color: #28a745;
    color: white;
  }

  button[type="submit"]:hover,
  input[type="submit"]:hover {
    background-color: #218838;
    border-color: #1e7e3