body {
    background-color: white;
    /* leave it to hide the scrollbars */
    overflow: hidden;
  }
  
  canvas {
      max-width: 100%;
      max-height: 100%;
      margin: auto;
      overflow: auto;
      position: fixed;
      object-fit: contain;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
  }