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diff --git a/testing/web-platform/tests/css/css-transforms/transform-iframe-scroll-position.html b/testing/web-platform/tests/css/css-transforms/transform-iframe-scroll-position.html
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+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Test (Transforms): iframe scroll position</title>
+    <link rel="author" title="Martin Robinson" href="mailto:mrobinson@igalia.com">
+    <link rel="help" href="http://www.w3.org/TR/css-transforms-1/#transform-rendering">
+    <meta name="assert" content="This test ensures that when an iframe element is transformed, the scroll position of the iframe content is preserved.">
+    <link rel="match" href="transform-iframe-scroll-position-ref.html">
+    <style>
+        iframe {
+            border: 0;
+            width: 50px;
+            height: 50px;
+            border: solid;
+        }
+
+        .rotate {
+            transform: rotate(90deg);
+        }
+    </style>
+    <body onload="onLoad();">
+        <iframe id="iframe" src="support/transform-iframe-scroll-position-contents.html"></iframe>
+        <script>
+            function onLoad() {
+                iframe.classList.toggle("rotate");
+            }
+        </script>
+    </body>
+</html>