:root:root:root:root:root { --marka: #6d28d9; }
html::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--warstwa-znak-demo);
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20width%3D'320'%20height%3D'320'%20viewBox%3D'0%200%20320%20320'%3E%3Ctext%20x%3D'160'%20y%3D'170'%20text-anchor%3D'middle'%20transform%3D'rotate(-30%20160%20160)'%20font-family%3D'Arial%2C%20sans-serif'%20font-size%3D'34'%20font-weight%3D'700'%20fill%3D'%236d28d9'%20fill-opacity%3D'0.09'%3EDEMO%20%C2%B7%20%C4%87wiczenia%3C%2Ftext%3E%3C%2Fsvg%3E");
  background-size: var(--znak-demo-kafel) var(--znak-demo-kafel);
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}