wpt/css/css-flexbox/mixed-containing-blocks-crash.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<title>CSS Flexbox: Mixed containing blocks</title>

<link rel="help" href="https://drafts.csswg.org/css-flexbox">
<link rel="help" href="https://github.com/servo/servo/issues/36121">
<meta name="assert" content="This test ensures that flex boxes that establish a containing block for fixed position descendants do not cause a crash when combined with flex items that establish a containing block for absolutely positioned descendants.">

<html>
    <div class="box" style="display: flex; flex-direction: column; transform: translateX(1px)">
      <div style="position: relative;"><div>Three</div><div style="position: absolute">fixed</div></div>
    </div>
</div>