1 files changed, 28 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-contain/contain-layout-006.html b/testing/web-platform/tests/css/css-contain/contain-layout-006.html
new file mode 100644
index 0000000000..57dc518a65
--- /dev/null
+++ b/testing/web-platform/tests/css/css-contain/contain-layout-006.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Containment Test: Layout containment absolutely positioned descendants</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-contain-1/#containment-layout">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name=assert content="Layout containment makes an element to act as containing block for absolutely positioned descendants.">
+<style>
+#contain-layout {
+  contain: layout;
+  width: 100px;
+  height: 100px;
+  background: red;
+}
+
+#abspos {
+  position: absolute;
+  bottom: 0;
+  right: 0;
+  background: green;
+  width: 100px;
+  height: 100px;
+}
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="contain-layout">
+  <div id="abspos"></div>
+</div>