.einvoice-form-container {
  max-width: 800px;
  margin: auto;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
}
.einvoice-form-container input[type="text"],
.einvoice-form-container input[type="number"] {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
}
.einvoice-form-container input[type="submit"] {
  background: #0073aa;
  color: #fff;
  padding: 10px;
  border: none;
  cursor: pointer;
  border-radius: 4px;
}
.einvoice-form-container input[type="submit"]:hover {
  background: #005177;
}