<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#determining">
<link rel="author" href="mailto:kojii@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script src="support/test-common.js"></script>
<style>
.relpos {
  position: relative;
}
.anchor1 {
  anchor-name: --a1;
  width: 10px;
  height: 10px;
  background: orange;
}
.target {
  position: absolute;
  width: anchor-size(--a1 width);
  height: 10px;
  background: lime;
}
</style>
<body onload="checkLayoutForAnchorPos('.target')">
  <!--
    All targets should find the 30px anchor, because it's the last
    one in the pre-order DFS from the `relpos`.
  -->
  <div class="relpos">
    <div class="target" data-expected-width=30></div>
    <div class="anchor1" style="width: 10px">
      <div class="anchor1" style="width: 20px"></div>
      <div class="target" data-expected-width=30></div>
    </div>
    <div class="anchor1" style="width: 30px"></div>
    <div class="target" data-expected-width=30></div>
  </div>
</body>
