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Test Info:
<style id="a">
* {
font: 0px/0px serif;
columns: 0;
display: inherit;
}
</style>
<script>
function go() {
a.appendChild(b)
}
</script>
<body onload=go()>
<details style="height: 1vw; display: inline" open="">
<summary></br>
<s dir="">
<svg>
</summary>
<optgroup id="b">