@media print {
  /* The legacy theme CSS hides everything during printing (blank pages).
     Restore normal printing by default. */
  body * {
    visibility: visible !important;
  }

  /* Opt-in "print only the area" behavior for pages that explicitly set it. */
  body.print-area-only * {
    visibility: hidden !important;
  }

  body.print-area-only #print-area,
  body.print-area-only #print-area * {
    visibility: visible !important;
  }

  body.print-area-only #print-area {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
  }
}