<!doctype html>
<meta charset="utf-8">
<title>CSS Test: ::scroll-button() activation without scroller shouldn't crash</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
div::scroll-button(inline-sta