html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #eee;
    /*overflow: hidden;*/
  }

  canvas {
    display: block;
    width: 100vw;
    height: auto;
    max-height: 100vh;
    object-fit: contain;
  }