css/css-layout-api/position-fragment-vlr-ltr.https.html

<!DOCTYPE html>
<html class=reftest-wait>
<link rel="help" href="https://drafts.css-houdini.org/css-layout-api/#layoutfragment">
<link rel="match" href="position-fragment-ref.html">
<meta name="assert" content="This test checks that child fragments get positioned correctly." />
<style>
.test {
  background: red;
  width: 100px;
  height: 100px;
}

.test {
  writing-mode: vertical-lr;
  direction: ltr;
}

.child-1 {
  background: rebeccapurple;
  width: 10px;
  height: 20px;

  --inline-offset: 25;
  --block-offset: 5;
}

.child-2 {
  writing-mode: vertical-rl;
  background: rebeccapurple;
  width: 15px;
  height: 25px;

  --inline-offset: 60;
  --block-offset: 50;
}

@supports (display: layout(test)) {
  .test {
    background: green;
    display: layout(test);
  }
}
</style>
<script src="/common/reftest-wait.js"></script>
<script src="/common/worklet-reftest.js"></script>

<div class="test">
  <div class="child-1"></div>
  <div class="child-2"></div>
</div>

<script>
importWorkletAndTerminateTestAfterAsyncPaint(CSS.layoutWorklet, {url: 'support/layout-position-child-worklet.js'});
</script>