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);
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.