html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
   /* background: #071018; */
    justify-content: center;
  }
  canvas {
    position: fixed;
    inset: 0;
    display: block;
    z-index: 0; /* canvas at back */
    pointer-events: none;
    align-items: end;
    bottom: 0;
  }