body {
    margin: 0;
    padding: 0;
    position: absolute;
    overflow: hidden;
    inset: 0;
    background-color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    touch-action: none;
  }
  
  /* This selector is more complicated since it clashes with dat.gui's naming. */
  body > .title {
    position: absolute;
    bottom: 0.3em;
    color: #fff;
    z-index: 1;
    right: 0.7em;
    font-family: sans-serif;
    font-weight: 100;
    text-align: right;
    text-transform: uppercase;
    vertical-align: middle;
    text-align: center;
    z-index: 1;
    text-shadow: 0 0 0.6em #333;
    opacity: 1;
    transition: opacity 300ms;
  }
  
  .title-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1;
    margin-bottom: 0.1em
  }
  
  .hide-ui .title {
    visibility: hidden;
    opacity: 0;
    transition: opacity 300ms, visibility 300ms 300ms;
    pointer-events: none;
  }
  
  canvas {
    width:100%;
    height:100%;
    background-color: #333;
    transition: opacity 1000ms;
    position: absolute;
    z-index: -1;
  }
  
  .title h1 {
    margin: 0;
    font-size: 2em;
    font-weight: lighter;
  }
  
  .title h2 {
    margin: 0;
  }
  
  .title a {
    color: #fff;
    text-decoration: none;
    font-size: 1.8em;
    padding: 0 0.3em;
    font-weight: bold;
    align-self: center;
    user-select: none;
    margin: 0;
    position: relative;
  }
  
  .error {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: #233;
    color: #fff;
    display: flex;
    font-family: sans-serif;
    padding: 10%;
    align-content: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
  }
  
  .download-link {
    color: #fff;
    background: #000;
    font-family: sans-serif;
    display: inline-block;
    padding: 10px;
  }
  
  .fullscreen {
    position: absolute;
    inset: 0;
  }
  
  @media (max-width:700px) {
    .title {
      right: 0;
      left: 0;
      justify-content: center;
      font-size: 0.7em;
    }
    .title a {
      padding: 0.3em 0.6em;
    }
  }