Moskow Pattern

CSS

.html {
  background:
    linear-gradient(-45deg, transparent 50%, rgba(0, 0, 0, 0.05) 50%),
    linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.2) 50%),
    linear-gradient(225deg, red 0%, red 25%, transparent 25%) -50em 0,
    linear-gradient(135deg, red 0%, red 25%, transparent 25%) -50em 0,
    linear-gradient(45deg, red 0%, red 25%, transparent 25%),
    linear-gradient(-45deg, red 0%, red 25%, transparent 25%);
  background-size: 50em 50em, 50em 50em, 100em 100em, 100em 100em, 100em 100em, 100em 100em;
  background-color: white;
  font-size: 1px;
}
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