@keyframes move-twink-back {
    from {background-position:0 0;}
    to {background-position:-10000px 5000px;}
}
@-webkit-keyframes move-twink-back {
    from {background-position:0 0;}
    to {background-position:-10000px 5000px;}
}
@-moz-keyframes move-twink-back {
    from {background-position:0 0;}
    to {background-position:-10000px 5000px;}
}
@-ms-keyframes move-twink-back {
    from {background-position:0 0;}
    to {background-position:-10000px 5000px;}
}

.stars {
  background:url(../img/stars.png) repeat top center;
  /* background-color: pink; */
  position: fixed;
  top: 0; 
  width:100%;
  height:100%;
  z-index:-999;
  display:block;
}
.twinkling{
    position:fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    width:100%;
    height:100%;
    display:block;
    background:transparent url(../img/twinkling.png) repeat top center;
    background-size: 15px;
    z-index:-20;
    -moz-animation:move-twink-back 200s linear infinite;
    -ms-animation:move-twink-back 200s linear infinite;
    -o-animation:move-twink-back 200s linear infinite;
    -webkit-animation:move-twink-back 200s linear infinite;
    animation: move-twink-back 1500s linear infinite;
}