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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Anchor Positioning Test: position-visibility: anchors-valid</title>
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/7758">
<link rel="match" href="position-visibility-anchors-valid-ref.html">
<style>
.anchor {
width: 100px;
height: 100px;
background: orange;
display: inline-block;
}
.target {
position: absolute;
position-visibility: anchors-valid;
inset-area: block-end;
width: 100px;
height: 100px;
background: red;
top: 0;
left: 0;
}
</style>
<!-- #target1 should be visible. -->
<div class="anchor" style="anchor-name: --a1;">anchor1</div>
<div id="target1" class="target" style="position-anchor: --a1; background: green">target1</div>
<!-- #target2 should not be visible because anchor name does not exist. -->
<div id="target2" class="target" style="top: anchor(--does-not-exist bottom);">target2</div>
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