body {
  background: hsl(183, 80%, 98%);
  --graph-color: hsl(0, 0%, 90%);
  background-image: linear-gradient(
      to right,
      var(--graph-color) 1px,
      transparent 0px 1vmin
    ),
    linear-gradient(to bottom, var(--graph-color) 1px, transparent 0px 1vmin);
  background-size: 5vmin 5vmin;
  background-position: calc(50% + 2.5vmin) 22vmin;
  height: 100vh;
}