html, body {
    width: 100%;
    height: 100%;
    /* remove the extra whites around */
    margin: 0;
    background-color: rgb(0, 0, 0);
  }
  #canvas {
    background-color: rgb(255, 170, 170);
    outline: 5px dotted rgb(255, 255, 255);
    
    display: block;
  }