body {
  background-color: black;

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

html, body {
  margin: 0 !important;
  padding: 0 !important;
}

#canvas-container {
  width: 100%;
  text-align:center;
}

canvas {
  display: inline;
}

#hiddenCanvas {
  display: none;
}