<!--
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<!DOCTYPE html>
<title>CSS Test: Test a passing custom property declaration in an @supports rule whose value contains a variable reference surrounded by white space with the variable name also surrounded by white space.</title>
<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
<link rel="help" href="http://www.w3.org/TR/css-variables-1/#syntax">
<link rel="match" href="support/color-green-ref.html">
<style>
body { color: red; }
@supports (--a: var( --b ) ) {
  p { color: green; }
}
</style>
<p>This text must be green.</p>
