body {
  margin: 0;
  overflow: hidden;
  font-family: sans-serif;
  background-color: #000;
}

#controls {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.1);
  padding: 10px;
  border-radius: 10px;
  color: #fff;
}

input[type="range"] {
  width: 100px;
}