body {
  background-color: black;
  /*lightblue;*/

  /* leave it to hide the scrollbars */
  overflow: hidden;
}

#container {
  z-index: 10000;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /* width: 800px; */
}

#save {
  z-index: 100000;
  position: absolute;
  bottom: 0%;
}