#sys_contact {
  display:scroll;
  position:fixed;
  top:300px;right:0px;
  background-image: url(https://www.nagel-paul.de/media/image/20/43/18/kontakt.png);
  background-position: 0px 0px;
  width: 39px;
  height: 39px;
  text-decoration: none;
}

#sys_facebook {
  display:scroll;
  position:fixed;
  top:350px;right:0px;
  background-image: url(https://www.nagel-paul.de/media/image/5a/ea/e4/facebook.png);
  background-position: 0px 0px;
  width: 39px;
  height: 39px;
  text-decoration: none;
}

#sys_contact:hover, #sys_facebook:hover, {
  background-position: 0px 39px;
}