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<!doctype html>
<title>CSS Conditional Test: @supports selector() detecting invalid in logical combinations.</title>
<link rel="author" title="Byungwoo Lee" href="mailto:blee@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-conditional/#at-supports">
<link rel="match" href="at-supports-selector-detecting-invalid-in-logical-combinations-ref.html">
<style>
div.invalid {
background-color: green;
height: 100px;
width: 100px;
}
div.valid {
background-color: red;
height: 100px;
width: 100px;
}
@supports selector(:is(.a)) {
div.is.valid { background: green };
}
@supports selector(:where(.a)) {
div.where.valid { background: green };
}
@supports selector(:has(.a)) {
div.has.valid { background: green };
}
@supports selector(:not(.a)) {
div.not.valid { background: green };
}
@supports selector(:is(:foo, .a)) {
div.is.invalid { background: red };
}
@supports selector(:where(:foo, .a)) {
div.where.invalid { background: red };
}
@supports selector(:has(:foo, .a)) {
div.has.invalid { background: red };
}
@supports selector(:not(:foo, .a)) {
div.not.invalid { background: red };
}
</style>
<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
<div class="is valid"></div>
<div class="where valid"></div>
<div class="has valid"></div>
<div class="not valid"></div>
<div class="is invalid"></div>
<div class="where invalid"></div>
<div class="has invalid"></div>
<div class="not invalid"></div>
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