body {
    margin: 0;
    padding: 0;
}

#background {
  background-image: url('background.png');
  height: 100vh;
  width: 100%;
  background-size: cover;
  background-position: center center;
  background-attachment: fixed; /* Fixes Firefox clipping bugs */
  /* extra bits */
  /* position: fixed;
  top: 0;
  background-repeat: no-repeat; */
}

@supports(-moz-appearance:none) {
#background {
  background-image: url('background.png');
  height: 100vh;
  width: 100%;
  background-size: contain;
  background-position: center center;
  background-attachment: fixed; /* Fixes Firefox clipping bugs */
  /* extra bits */
  /* position: fixed;
  top: 0;
  background-repeat: no-repeat; */
}
}