.facebook-btn {
    display: inline-block;
    width: 200px;
    height: 47px;
    background-image: url('images/facebook-signing.png');
    background-repeat: no-repeat;
}
.facebook-btn:hover {
   /* background-position: 0px -24px; */
}
.facebook-btn:active {
  /*  background-position: 0px -48px; */
}