body {
    height: 100vh;
    display: grid;
    place-items: center;
    background: hsl(0, 0%, 96%);
    overflow-y: hidden;
    margin: 0;
  }
  
  main > canvas {
    width: 100vmin !important;
    height: 100vmin !important;
    background:#FEFEFE;
    display: flex;
    justify-content: center;
  }