html, body {
  margin: 0;
  padding: 0;
  background: black;
  color: white;
  font-family: sans-serif;
  overflow-x: hidden;
}
#container {
  padding: 20px;
}
#spectrum {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}
.gif-bouncer {
  position: fixed;
  width: 100px;
  height: 100px;
  pointer-events: none;
  z-index: 9999;
}