CodePen Embed - Stair pattern

html {
  --s: 100px;
  
  --_g: #00A0B0 0 25%,#0000 0 50%;
  background:
   repeating-conic-gradient(at 33% 33%,var(--_g)),
   repeating-conic-gradient(at 66% 66%,var(--_g)),
   #EB6841;
  background-size: var(--s) var(--s);
}

This Pen is owned by Temani Afif on CodePen.

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