body {
  /* leave it to hide the scrollbars */
  overflow: hidden;
  padding: 0;
  margin: 0;
}

.container {
  display: flex;
}

.canvasDiv {
  display: flex;
  margin: 0 auto;
}

#defaultCanvas0 {
  visibility: visible !important;
  max-width: 100vmin;
  max-height: 100vmin;
}