css/css-display/display-contents-shadow-host-whitespace.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Whitespace across display:contents shadow host</title>
<link rel="help" href="https://drafts.csswg.org/css-display-3/#valdef-display-contents">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-rules">
<link rel="match" href="../reference/pass_if_two_words.html">
<p>There should be a space between "two" and "words" below.</p>
<div id="host" style="display:contents"></div> <span>words</span>
<script>
  host.attachShadow({mode:"open"}).innerHTML = "two";
</script>