css/css-display/display-contents-first-letter-002.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Display: display:contents and ::first-letter inheritance</title>
<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-display-3/#valdef-display-contents">
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-letter-pseudo">
<link rel="match" href="display-contents-pass-green-no-red-ref.html">
<style>
  div { color: red }
  div::first-letter { background: transparent /* To trigger first-letter pseudo element */ }
  span { color: green; display: contents; background-color: red }
</style>
<p>You should see the word PASS in green and no red below.</p>
<div><span>PASS</span></div>