/* body */

body {
  margin: 0;
  padding: 0;
  background-image: url(bgc.gif);
}

/* footer */

#footer {
  position: absolute;
  bottom: 0;
  height: 373px;
  width: 100%;
  background-image: url(bg.gif);
  background-repeat: no-repeat;
  background-position: 100% 100%;
}


/* birds */

#birds {
  position: fixed;
  right: 40px;
  top: 60px;
  width: 470px;
  height: 93px;
  background-image: url(birds.gif);
  z-index: 9999;
}

/* dark */

body.dark {
  background-image: url(bgc-black.gif);
}

body.dark #footer {
  background-image: url(bg-black.gif);
}

body.dark #birds {
  background-image: url(birds-white.gif);
}