<!DOCTYPE html>
<title>Custom Functions: Local var() substitution</title>
<link rel="help" href="https://drafts.csswg.org/css-mixins-1/#locally-substitute-a-var">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/utils.js"></script>

<div id=target></div>
<div id=main></div>

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     --expected on #target. -->

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