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+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test that overlay scrollbars are not covered by overlapping non-positioned siblings</title>
+
+<style>
+
+#outer {
+ width: 200px;
+ height: 200px;
+ overflow: auto;
+ background: cyan;
+}
+
+#content {
+ height: 400px;
+}
+
+/* This test has different behavior depending on the type of scrollbar used.
+ * We want the scrollbar to be visible. But for non-overlay scrollbars, the
+ * cover would cover them so we disable the cover.
+ */
+@media all and (-moz-overlay-scrollbars) {
+ #cover {
+ margin-top: -200px;
+ width: 200px;
+ height: 200px;
+ background: cyan;
+ }
+}
+
+</style>
+
+<div id="outer"><div id="content"></div></div>
+<div id="cover"></div>