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variable-supports-42.html
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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!DOCTYPE html>
<title>CSS Test: Test a failing custom property declaration in an @supports rule whose value contains a variable reference with fallback containing a top level "!important".</title>
<linkrel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
<linkrel="help" href="http://www.w3.org/TR/css-variables-1/#syntax">
<linkrel="match" href="support/color-green-ref.html">
<style>
body { color: red; }
@supports (--a: a) and (not (--a:var(--b,!important))) {
p { color: green; }
}
</style>
<p>This text must be green.</p>
