rggraph {
  background-color: #f6f7f8;
  background-size: 8px 8px;
  background-image: repeating-linear-gradient(0deg, #f0f1f2, #f0f1f2 1px, transparent 1px, transparent 8px),
                    repeating-linear-gradient(-90deg, #f0f1f2, #f0f1f2 1px, transparent 1px, transparent 8px);
}
