File: display-contents-dynamic-before-after-001.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Display: Dynamic changes to ::before and ::after on display:contents</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:ecobos@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-display-3/#valdef-display-contents">
<link rel="match" href="display-contents-pass-green-no-red-ref.html">
<style>
    div { display: contents; color: green; }
    .p::before { content: "P" }
    .a::before { content: "A" }
    .s::after { content: "S" }
    div::before { color: red; display: contents; border: 1px solid red; }
    .active div::before { color: green; }
</style>
<p>You should see the word PASS in green and no red below.</p>
<div><!--
 --><div><div class="p"></div></div><!--
 --><div></div><!--
 --><div class="a"></div><!--
 --><div>S<div class="s"></div></div>
</div>
<script>
document.body.offsetTop;
document.body.className = "active";
</script>