html,
body {
  background-color: black;
  color: white;
}

a {
  color: lime;
}

p {
  margin: 0;
}

#menu {
  float: right;
  width: 100px;
  text-align: right;
  display: flex;
  flex-direction: column;
}

#content {
  float: left;
  width: 500px;
}

#particle-system-container canvas {
  border: 1px solid white;
}