dynamic-baseline-change.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-flexbox/dynamic-baseline-change.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#baseline-participation">

<link rel="match" href="dynamic-baseline-change-ref.html">

<meta name="assert" content="This test ensures proper baseline alignment for a sub-tree which adds a scrollbar.">

<div style="display: flex; width: 100px; border: solid; align-items: baseline;">

  <div style="width: 50px; height: 50px; position: relative; overflow: auto;">

    <canvas width=10 height=10 style="width: 80%; background: green;"></canvas> <!-- Baseline of the canvas will move when a scrollbar is added. -->

    <div id="target" style="position: absolute; width: 10px; height: 10px; background: red; top: 0;"></div>

  </div>

  <div style="width: 50px; height: 50px; background: green;"></div> <!-- Baseline is synthesized at the block-end edge. -->

</div>

<script>

  document.body.offsetTop;

  document.getElementById('target').style.top = '100px';

</script>