.graph-paper {
  background:
    linear-gradient(-90deg, rgb(0 0 0 / 5%) 1px, transparent 1px),
    linear-gradient(rgb(0 0 0 / 5%) 1px, transparent 1px),
    linear-gradient(-90deg, rgb(0 0 0 / 4%) 1px, transparent 1px),
    linear-gradient(rgb(0 0 0 / 4%) 1px, transparent 1px),
    linear-gradient(transparent 3px, #f2f2f2 3px, #f2f2f2 78px, transparent 78px),
    linear-gradient(-90deg, #aaa 1px, transparent 1px),
    linear-gradient(-90deg, transparent 3px, #f2f2f2 3px, #f2f2f2 78px, transparent 78px),
    linear-gradient(#aaa 1px, transparent 1px),
    #f2f2f2;
  background-size:
    16px 16px,
    16px 16px,
    80px 80px,
    80px 80px,
    80px 80px,
    80px 80px,
    80px 80px,
    80px 80px;
}