.woocommerce form.woocommerce-form-track-order {
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  .form-row-first,
  .form-row-last {
    width: 100%;
    input.input-text {
      text-align: center;
    }
  }
}