1 files changed, 18 insertions, 0 deletions
diff --git a/layout/reftests/margin-collapsing/block-first-child-1-ref.html b/layout/reftests/margin-collapsing/block-first-child-1-ref.html
new file mode 100644
index 0000000000..4ea04150d8
--- /dev/null
+++ b/layout/reftests/margin-collapsing/block-first-child-1-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<style type="text/css">
+#separator, #spacer, #first-child {
+ height: 20px;
+}
+#separator, #first-child {
+ background-color: green;
+}
+</style>
+</head>
+<body>
+<div id="separator"></div>
+<div id="spacer"></div>
+<div id="first-child"></div>
+</body>
+</html>