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

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Display: display:contents and ::first-line 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-line-pseudo">
<link rel="match" href="display-contents-pass-green-no-red-ref.html">
<style>
  span { color: green }
  .contents { display: contents }
  #container::first-line { color: red }
</style>
<p>You should see the word PASS in green and no red below.</p>
<div id="container">
  <span class="contents">P</span><span>ASS</span>
</div>