1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-flexbox/gap-009-ltr-ref.html b/testing/web-platform/tests/css/css-flexbox/gap-009-ltr-ref.html
new file mode 100644
index 0000000000..10e4398554
--- /dev/null
+++ b/testing/web-platform/tests/css/css-flexbox/gap-009-ltr-ref.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Flexbox Test: gap - mixed units</title>
+<link rel="author" title="Adam Argyle" href="mailto:argyle@google.com">
+<style>
+  section {
+    background-color: green;
+    block-size: 100px;
+    display: flex;
+    flex-wrap: wrap;
+  }
+  section > div{
+    background-color: grey;
+  }
+  section > div {
+    width: calc(50% - .5rem);
+  }
+  section > div:nth-child(1),
+  section > div:nth-child(3) {
+    margin-inline-end: 1rem;
+  }
+  section > div:nth-child(3),
+  section > div:nth-child(4) {
+    margin-block-start: 50px; /* half block size */
+  }
+</style>
+<body>
+  <p>Test passes if there are <strong> 50% horizontal green line and 1rem vertical green line between boxes</strong>.</p>
+  <section>
+    <div></div>
+    <div></div>
+    <div></div>
+    <div></div>
+  </section>
+</body>