body.loaded section {
  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
  opacity: 1;
}
body.loaded.not section {
  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=0);
  opacity: 0;
}

.not-loaded-until.loaded {
  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
  opacity: 1;
}
.not-loaded-until.loaded.not {
  filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=0);
  opacity: 0;
}

html, body {
  min-height: 100%;
  background-color: black;
}