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Test Info:

<html class="reftest-wait">
<style>
:not(option) {
position: absolute;
}
#a {
background: url(data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=) fixed;
}
fieldset:first-child {
column-width: 0;
filter: invert(3);
}
</style>
<script>
function go() {
a.multiple = true
document.documentElement.classList.remove("reftest-wait");
}
</script>
<body onload=go()>
<fieldset style="scale: 1 9 0.3472">
<select id="a">
</html>