backdrop-in-flow-ref.html | Explore in Territory

<!DOCTYPE html>
<style>
#backdrop {
    position: absolute;
    top: 100px;
    left: 100px;
    height: 100px;
    width: 100px;
    background: green;
}
</style>
<body>
Test that position 'static' or 'relative' for ::backdrop computes to 'absolute'.
The test passes if there is a single green box.
<div id="backdrop"></div>
</body>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/interactive-elements/the-dialog-element/backdrop-in-flow-ref.html