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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Dialog-Popover appearance</title>
<link rel="author" href="mailto:masonf@chromium.org">
<p>Both dialogs should have the same shades of background.</p>
<p>The popover should have a completely-transparent ::backdrop.</p>
<dialog popover id=d1>This is a modal dialog</dialog>
<dialog popover id=d2>This is a dialog popover</dialog>
<style>
dialog {
left: 50px;
right: auto;
bottom: auto;
}
#d1 {top:100px;}
#d2 {top:150px;}
/* Force backdrop to spec: */
#d1::backdrop {
/* https://html.spec.whatwg.org/multipage/rendering.html#flow-content-3 */
background-color: rgba(0, 0, 0, 0.1);
}
#d2::backdrop {
/* When shown as a popover, backdrop must be transparent */
background-color: transparent;
}
</style>
<script>
document.getElementById('d1').showModal();
document.getElementById('d2').showPopover();
</script>
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