css/css-scoping/has-slotted-functional-flattened-003.tentative.html

<!doctype html>
<meta charset="utf-8">
<title>:has-slotted(...) flattened through multiple slots, negative test: no children, but whitespace present</title>
<link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10586">
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div id="ancestor">
    <template shadowrootmode="open">
        <div id="host">
            <template shadowrootmode="open">
                <style>
                slot {
                    display: block;
                    width: 100px;
                    height: 100px;
                    background-color: green;
                }
                :has-slotted(*) {
                    background-color: red;
                }
                </style>
                <slot></slot>
            </template>
        </div>
        <slot></slot>
    </template>
</div>