html {
--s: 70px; /* control the size */
--c: #6B5344;
--_l: #0000 46%,var(--c) 47% 53%,#0000 54%;
background:
radial-gradient(100% 100% at 100% 100%,var(--_l)) var(--s) var(--s),
radial-gradient(100% 100% at 0 0 ,var(--_l)) var(--s) var(--s),
radial-gradient(100% 100%,#0000 22%,var(--c) 23% 29%, #0000 30% 34%,var(--c) 35% 41%,#0000 42%)
#F8ECC9;
background-size: calc(var(--s)*2) calc(var(--s)*2);
}
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