html {
--s: 150px; /* control the size */
background:
linear-gradient(135deg,#0000 18.75%,#5E412F 0 31.25%,#0000 0),
repeating-linear-gradient(45deg,#5E412F -6.25% 6.25%,#FCEBB6 0 18.75%);
background-size: var(--s) var(--s);
}
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