css/css-pseudo/highlight-painting-shadows-vertical.html

<!doctype html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Shadows on highlights vertical text</title>
<link rel="author" name="Stephen Chenney" href="mailto:schenney@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#highlight-painting">
<link rel="match" href="highlight-painting-shadows-vertical-ref.html">
<meta name="assert" value="::selection and ::target-text both with shadows are painted in the correct order, including originating element shadows">
<meta name="fuzzy" content="0-32;0-4">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
<script src="support/selections.js"></script>
<style>
    :root {
        font-family: Ahem;
        writing-mode: vertical-lr;
        line-height: 1;
        white-space: pre;
    }
    p {
        color: black;
        text-shadow: 0.1em 0.1em rgba(0,0,0,0.5);
        position: absolute;
        top: 10px;
        left: 10px;
    }
    p::selection {
        color: green;
        text-shadow: -0.25em -0.25em rgba(0,128,0,0.5);
    }
    p::target-text {
        color: blue;
        text-shadow: 0.25em 0.25em rgba(0,0,128,0.5);
    }
</style>
<p>partially selected target</p>
<script>
    window.location.hash = "#:~:text=target";
    const target = document.querySelector("p");
    selectRangeWith(range => {
        range.selectNodeContents(target);
        range.setStart(target.childNodes[0], 4);
        range.setEnd(target.childNodes[0], 21);
    });
</script>