* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  height: 100vh;
  display: grid;
  place-items: center;
  background: hsl(0, 0%, 5%);
}

.canvas {
  width: 100vmin;
  height: 100vmin;
  background: hsl(0, 0%, 0%);
}