@-moz-document domain("www.google.it") {

body {
background:transparent url('http://downloads.open4group.com/wallpapers/suelyn-medeiros-f62a2.jpg')  !important;
}

img[src*="/logos/"],
  img[src*="/intl/"],
  img[src*="logo.gif"] {
    width: 0 !important;
    height: 110px !important;
    padding-left: 276px !important;
    background-image: url("http://userlogos.org/files/logos/mafi0z/GoogleB.png");
    background-position: center center;
    background-repeat: no-repeat;
  }

  img[src="images/hp0.gif"] {
    width: 0 !important;
    height: 75px !important;
    padding-left: 158px !important;
    background-image: url("http://userlogos.org/files/logos/mafi0z/GoogleB.png");
    background-position: top left;
    background-repeat: no-repeat;
  }

}