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+++ b/testing/web-platform/tests/css/css-contain/container-queries/reattach-container-with-dirty-child.html
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+<!doctype html>
+<title>CSS Container Queries Test: @container changing display type while descendant styles change</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#size-container">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/cq-testcommon.js"></script>
+<style>
+  #container {
+    container-type: inline-size;
+  }
+  @container (min-width: 200px) {
+    div { color: red }
+  }
+  @container (max-width: 150px) {
+    div { color: lime }
+  }
+</style>
+<div id="container">
+  <div id="child"><span id="inner">XXX</span></div>
+</div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  test(() => {
+    container.offsetTop;
+    assert_equals(getComputedStyle(child).color, "rgb(255, 0, 0)");
+  }, "Initially wider than 200px");
+
+  test(() => {
+    container.style.width = "100px";
+    container.style.display = "inline-block";
+    inner.style.color = "green";
+    container.offsetTop;
+    assert_equals(getComputedStyle(child).color, "rgb(0, 255, 0)");
+    assert_equals(getComputedStyle(inner).color, "rgb(0, 128, 0)");
+  }, "Container query changed and inner.style applied");
+</script>