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<!--
Any copyright is dedicated to the Public Domain.
-->
<!DOCTYPE html>
<title>CSS Test: Test a passing custom property declaration in an @supports rule for a variable whose name is U+FFFD which is specified with an escaped lone surrogate.</title>
<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
<link rel="match" href="support/color-green-ref.html">
<style>
body { color: red; }
@supports (--\d800: a) {
p { color: green; }
}
</style>
<p>This text must be green.</p>