body {
  background-color: #222222;
  margin: 0;
  padding: 0;
  text-align: center;
  /* leave it to hide the scrollbars */
  overflow: hidden;
}


#defaultCanvas0 {
  max-width: 100% !important;
  height: auto !important;
  width: auto !important;
  max-height: 100% !important;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translateY(-50%) translateX(-50%);
  transform: translateY(-50%) translateX(-50%);
}