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<title>CSS Conditional Test: Disjunction token `or` should not immediately precede its following opening paren.</title>
<link rel="author" title="Fabien Basmaison" href="https://arkhi.org/">
<link rel="help" href="https://www.w3.org/TR/css3-conditional/#at-supports">
<link rel="match" href="at-supports-001-ref.html">
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<meta name="assert" content="This tests that the `or` token requires at least one whitespace on its right hand. A string followed immediately by an opening paren is reserved for the functional notation syntax.">
<style>
div {
background-color: green;
height: 100px;
width: 100px;
}
@supports ( ( background-color: red ) or( background-color: green ) ) {
div { background-color: red; }
}
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<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
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