/* Fill the viewport, remove margins/scrollbars, center the canvas, dark background */
* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #0b0f14; /* dark background */
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas, #boids {
  display: block;
  width: 100vw;
  height: 100vh;
}