css/css-pseudo/selection-paint-image.html

<!doctype html>
<title>CSS Pseudo-Elements Test: Replaced content shown through selection</title>
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#highlight-replaced">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
<link rel="mismatch" href="selection-paint-image-notref.html">
<style>
  div { font: 100px/1 Ahem; }
  img { vertical-align: top; }
  ::selection { background-color: green; }
</style>
<p>The red image to the right should shine through the green selection.</p>
<div>&nbsp;<img src="support/100x100-red.png"></div>
<script>
  let range = document.createRange();
  range.selectNodeContents(document.querySelector("div"));
  window.getSelection().addRange(range);
</script>