css/css-pseudo/marker-content-022.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS Test: ::marker pseudo elements styled with 'content' property</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="match" href="marker-content-022-ref.html">
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#marker-pseudo">
<link rel="help" href="https://drafts.csswg.org/css-lists/#list-style-position-outside">
<meta name="assert" content="When a list item with an outside marker only has an inline child
  with a block grandchild, some browsers insert a newline between the marker and the block,
  and some don't. It's not clear what should happen, but this test checks that the behavior
  is consistent whether the block is inserted dynamically or was there from the beginning.">
<style>
.symbol {
  list-style-type: disc;
}
.decimal {
  list-style-type: decimal;
}
.string {
  list-style-type: "string";
}
.content::marker {
  content: "content";
}
</style>
<ol>
  <li class="symbol"><span></span></li>
  <li class="decimal"><span></span></li>
  <li class="string"><span></span></li>
  <li class="content"><span></span></li>
</ol>
<script src="/common/reftest-wait.js"></script>
<script>
// Use a "load" event listener and requestAnimationFrame to ensure that
// the markers will have been laid out.
addEventListener("load", () => requestAnimationFrame(() => {
  const div = document.createElement("div");
  div.appendChild(document.createTextNode("foo"));
  for (let span of document.querySelectorAll("li > span")) {
    span.appendChild(div.cloneNode(true));
  }
  takeScreenshot();
}), {once: true});
</script>
</html>