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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-anchor-position/anchor-scroll-009.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>Scroll compensation when the containing block is an inline, and the anchor is in an inner scroller</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
#outer-scroll {
overflow: hidden;
width: 300px;
height: 250px;
}
#cb {
position: relative;
}
#inner-scroll {
overflow: hidden;
width: 50px;
height: 150px;
}
#anchor {
anchor-name: --a;
width: 50px;
height: 100px;
background: green;
}
#positioned {
position: absolute;
position-anchor: --a;
left: anchor(right);
top: anchor(top);
width: 50px;
height: 100px;
background: green;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="outer-scroll">
<span id="cb">
<div id="inner-scroll">
<div style="height: 50px"></div>
<div id="anchor"></div>
<div style="height: 1000px"></div>
</div>
<div id="positioned"></div>
</span>
<div style="height: 1000px"></div>
</div>
<script>
/* The outer-scroll sits above the containing block. Scrolling it moves the
containing block and the anchor together, so it should not affect the
positioned element's position relative to its anchor. */
document.getElementById("outer-scroll").scrollTop = 50;
</script>