File: scroll-button-universal-before.html

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<!DOCTYPE html>
<title>CSS Overflow Test: ::scroll-button(*) style should not apply to ::before</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>
<style>
  #target::before {
    color: green;
    content: " ";
  }
  #target::scroll-button(*) {
    color: red;
  }
</style>
<div id="target"></div>
<script>
  test(() => {
    assert_equals(getComputedStyle(target, "::before").color, "rgb(0, 128, 0)");
  }, "::before should not pick up style from ::scroll-button(*) rule");
</script>