html, body {

  width: 100%;

  height: 100%;

  margin: 0;

  padding: 0;

}

body {

  background-color: #000;

  overflow: hidden;

  touch-action: none;

  background: #000;

    width: 100%;

  height: 100%;

 margin:50px 0;

  text-align:center;

}

main {

  width: 100%;

  height: 100%;

  display: flex;

  align-items: center;

  justify-content: center;

  background-color: black;

}

canvas {

  width: auto !important;

  height: auto !important;

  max-width: 100% !important;

  max-height: 100% !important;

  background: #ffffff;

}