html {
  background-color: dodgerblue;
  background-image: linear-gradient(25deg, rgba(0, 0, 0, 0.15) 65%, transparent, rgba(0, 0, 0, 0.15) 70%), linear-gradient(-25deg, rgba(0, 0, 0, 0.15) 65%, transparent, rgba(0, 0, 0, 0.15) 70%), linear-gradient(-25deg, rgba(0, 0, 0, 0.15) 30%, transparent, rgba(0, 0, 0, 0.15) 35%), linear-gradient(25deg, rgba(0, 0, 0, 0.15) 30%, transparent, rgba(0, 0, 0, 0.15) 35%), linear-gradient(65deg, rgba(0, 0, 0, 0.15) 65%, transparent, rgba(0, 0, 0, 0.15) 70%), linear-gradient(-65deg, rgba(0, 0, 0, 0.15) 65%, transparent, rgba(0, 0, 0, 0.15) 70%), linear-gradient(-65deg, rgba(0, 0, 0, 0.15) 30%, transparent, rgba(0, 0, 0, 0.15) 35%), linear-gradient(65deg, rgba(0, 0, 0, 0.15) 30%, transparent, rgba(0, 0, 0, 0.15) 35%);
  background-size: 5em 2em, 5em 2em, 5em 2em, 5em 2em, 2em 5em, 2em 5em, 2em 5em, 2em 5em;
}