<!DOCTYPE html>
<link rel="author" title="David Shin" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#relational">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1876962">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
<meta name="assert" content="Ensure that style sharing optimizations do not interfere with :has() selector matching.">
<style>
div {
width: 20px;
height: 20px;
}
.after::after {
font: 15px/1 Ahem;
content: "x";
}
</style>
<div class="after"></div>
<div></div>