* {
  padding: 0;
  margin: 0;
}

canvas {
  display: block;
  z-index: 3;
  margin: auto;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: rgb(53, 50, 50);
}

@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;
  }
}

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

.stars,
.twinkling,
.clouds {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.stars {
  background: #000 url(assets/stars.png) repeat top center;
  z-index: 0;
}

.twinkling {
  background: transparent url(assets/twinkling.png) repeat top center;
  z-index: 1;

  -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 200s linear infinite;
}

.clouds {
  background: transparent url(assets/clouds.png) repeat top center;
  z-index: 2;

  -moz-animation: move-clouds-back 200s linear infinite;
  -ms-animation: move-clouds-back 200s linear infinite;
  -o-animation: move-clouds-back 200s linear infinite;
  -webkit-animation: move-clouds-back 200s linear infinite;
  animation: move-clouds-back 200s linear infinite;
}