Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-position/block-axis-constraint-changes-for-out-of-flow-box.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<link rel="match" href="block-axis-constraint-changes-for-out-of-flow-box-ref.html">
<meta name="assert" content="top anchored abs pos child moves when containing block border changes.">
<style>
.parent_block {
position: relative;
width: 200px;
height: 100px;
box-sizing: border-box;
}
.child {
position: absolute;
left: 0px;
width: 50px;
height: 50px;
background-color: green;
}
</style>
<div class=parent_block>
<div id=child_top class=child style="top: 0px;"></div>
</div>
<div class=parent_block>
<div id=child_bottom class=child style="bottom: 0px;"></div>
</div>
<script>
document.body.offsetTop;
child_top.parentNode.style.borderTop = "50px solid blue";
child_bottom.parentNode.style.borderBottom = "50px solid blue";
</script>