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

html, body {
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
  background: #111;
  color: #eee;
}

#scene-container {
  position: fixed;
  inset: 0;
  z-index: 0;
}

#content-container {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

#ui-overlay {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}
#ui-overlay svg {
  width: 100%;
  height: 100%;
  display: block;
}