@media screen, projection
{

  /* use image replacement solution
   * by Nicolas Gallagher (2011)
   * http://nicolasgallagher.com/another-css-image-replacement-technique/ */
  .crypt {
    font: 0/0 a;
    text-shadow: none;
    color: transparent;
    border: 0;
    background-color: transparent;
  }

}

@media print
{

  /* force to hide on printed pages */
  .crypt {
    display: none;
  }

}