html, body {
  margin: 0;
  padding: 0;
}
canvas {
  display: block;
  /*transform: scale(.5,.5)*/
}

/*
html, body {
    margin: 0;
    height: 100%; 
  }
  
canvas {
    display: block;
    width: 100%;
    height: 100%;
  }
*/


main{
  text-align: center;
  margin: 0 auto;
}