html, body {
  margin: 0;
  padding: 0;


  overflow: hidden;
  touch-action: none;
  -webkit-user-select: none; 
  -moz-user-select: none; 
  -ms-user-select: none; 
  user-select: none; 

}

canvas {
  padding: 0;
  margin: auto;
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}