* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #000;
  overflow: hidden;
}

#canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

/* "This demo uses" box, bottom left. It floats over the full-screen demo
   and lets clicks pass through to whatever is underneath. */
#uses {
  position: fixed;
  left: 10px;
  bottom: 10px;
  max-width: 520px;
  z-index: 2000;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(20, 20, 20, 0.85);
  color: #eee;
  font-family: sans-serif;
  font-size: 14px;
  line-height: 1.5;
  pointer-events: none;
}
#uses h2 { font-size: 14px; margin: 0 0 4px 0; color: #fff; }
#uses ul { list-style: none; margin: 0; padding: 0; }
#uses strong { color: #fff; }