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<!DOCTYPE HTML>
<head>
<meta charset="UTF-8">
<title>CSS Test: dynamic changes to offset properties</title>
<link rel="author" title="L. David Baron" href="https://dbaron.org/">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-writing-modes-3/#vertical-layout">
<link rel="match" href="dynamic-offset-rtl-001-ref.html">
<meta name="flags" content="dom">
<meta name="assert" content="Layout rules for 'right' and 'left' are handled correctly for absolutely positioned elements, in the presence of dynamic changes to 'width' of the containing block.">
<style>
html {
writing-mode: vertical-rl;
overflow: hidden;
}
#container {
position: absolute;
top: 0;
left: 0;
width: 200px;
height: 100px;
background: yellow;
}
#abspos {
position: absolute;
top: 10px;
right: 20px;
width: 10px;
height: 10px;
background: fuchsia;
}
</style>
<div id="container">
<div id="abspos"></div>
</div>
<script>
window.addEventListener("load", function(event) {
var e = document.getElementById("abspos");
e.offsetTop; // flush layout
e.parentNode.style.width = "100px";
});
</script>
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