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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /custom-elements/pseudo-class-defined-print.html - WPT Dashboard Interop Dashboard
<!doctype html>
<link rel="match" href="pseudo-class-defined-print-ref.html">
<style>
custom-element {
display: block;
width: 100px;
height: 100px;
background: green;
}
custom-element:not(:defined) {
background: red;
}
</style>
<custom-element></custom-element>
<script>
customElements.define("custom-element", class extends HTMLElement { });
</script>