@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document
  url-prefix("http://dobreprogramy.pl/index.php?dz=15"),
  url-prefix("http://dobreprogramy.pl/index.php?dz=6"),
  url-prefix("http://dobreprogramy.pl/index.php?dz=8")
{

    #naglowek, #aktualDiv, #lewa, #navBar, #footer{
      display: none!important;
    }

    body {
      background-image: none !important;
    }

}