.wps-btn__loader {
    position: relative;
  }
  
  .wps-btn__loader:before {
    animation: loading 1s infinite linear;
    content: "\f113";
    font-size: 20px;
    position: absolute;
    top: 50%;
    right: -30px;
    transform-origin: center;
    color: #0073aa;
    font-family: dashicons;
  }

  @keyframes loading {
    from {
      transform: translateY(-50%) rotate(360deg);
    }
    to {
      transform: translateY(-50%) rotate(0deg);
    }
  }

  .download_invoice_message {
    display: none;
    color: chartreuse;
  }

  .wps-quickbooks-thankyou-invoice {
    margin: 24px 0;
  }

  .wps-quickbooks-thankyou-invoice h2 {
    font-size: 1.2em;
    margin-bottom: 10px;
  }

  .wps-quickbooks-thankyou-invoice__note {
    margin-top: 8px;
    color: #666;
    font-size: 0.9em;
  }

  .wps-quickbooks-thankyou-invoice .download_invoice:disabled,
  .wps-quickbooks-thankyou-invoice .download_invoice[disabled] {
    background-color: #c9c9c9 !important;
    border-color: #c9c9c9 !important;
    color: #6b6b6b !important;
    cursor: not-allowed;
    opacity: 0.7;
  }