html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #05060a;
  overflow: hidden;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #e8ecf5;
}

#sky {
  display: block;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(ellipse at 50% 50%, #0b1020 0%, #05060a 70%, #000 100%);
  cursor: crosshair;
}