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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-break/out-of-flow-in-multicolumn-120.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="Test that dynamically prepending content in nested multicol with absolutely positioned element renders correctly.">
<style>
.column {
column-count: 2;
column-fill: auto;
column-gap: 0;
}
#abscb {
position: relative;
width: 100%;
height: 50px;
background: red;
}
#abscb > div {
width: 100%;
background: green;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="column" style="width: 200px; height: 100px;">
<div class="column">
<div id="abscb">
<div style="height: 50px"></div>
<div style="position: absolute; height: 90px;"></div>
</div>
</div>
</div>
<script>
// Force a layout before inserting a new element.
document.body.offsetHeight;
const newDiv = document.createElement('div');
newDiv.style.height = '60px';
document.getElementById('abscb').prepend(newDiv);
</script>