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<!DOCTYPE html>
<title>Anchors in column-spanner in multicol</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#propdef-anchor-name">
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#anchor-pos">
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#anchor-size">
<link rel="author" href="mailto:kojii@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script src="support/test-common.js"></script>
<style>
.relpos {
position: relative;
}
.columns {
column-count: 2;
column-fill: auto;
column-gap: 10px;
column-width: 100px;
width: 210px;
height: 100px;
}
.colspan {
column-span: all;
}
.spacer {
height: 10px;
background: pink;
}
.anchor1 {
anchor-name: --a1;
margin-left: 10px;
width: 40px;
background: blue;
}
.anchor1 .spacer {
background: inherit;
}
.target {
position: absolute;
left: anchor(--a1 left);
top: anchor(--a1 top);
width: anchor-size(--a1 width);
height: anchor-size(--a1 height);
background: lime;
opacity: .3;
}
</style>
<body onload="checkLayoutForAnchorPos('.target')">
<div class="relpos">
<div class="spacer" style="height: 10px"></div>
<div class="columns relpos">
<div class="spacer" style="height: 50px"></div>
<div class="relpos">
<div class="anchor1">
<div class="spacer" style="height: 10px"></div>
<div class="colspan" style="height: 20px"></div>
<div class="spacer" style="height: 30px"></div>
</div>
<!--
When anchors are split by the column spanners, OOFs laid out in a
multicol (i.e., the containing block is within a multicol) can't
compute the united bounding box, because the coordinate system in the
multicol can't express united rectangles across columns that are not
lined up.
<div class="target"></div>
-->
</div>
<div class="target"
data-offset-x=10 data-offset-y=20
data-expected-width=150 data-expected-height=60></div>
</div>
<div class="target"
data-offset-x=10 data-offset-y=30
data-expected-width=150 data-expected-height=60></div>
</div>
</body>
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