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+<!DOCTYPE html>
+<!-- Any copyright is dedicated to the Public Domain.
+ - http://creativecommons.org/publicdomain/zero/1.0/ -->
+<html>
+ <head>
+ <title>CSS Test: Sticky Positioning - top, stuck</title>
+ <link rel="author" title="Corey Ford" href="mailto:cford@mozilla.com">
+ <link rel="match" href="top-3-ref.html">
+ <meta name="flags" content="dom">
+ <meta name="assert" content="Sticky-top with scrolling: should move to partially cover static positioned sibling">
+ <style>
+ #scroll {
+ height: 100px;
+ overflow: hidden;
+ }
+ #contain {
+ height: 300px;
+ background-color: gray;
+ }
+ #sticky {
+ position: sticky;
+ top: 10px;
+ height: 10px;
+ background-color: black;
+ }
+ #static {
+ height: 10px;
+ background-color: blue;
+ }
+ </style>
+ </head>
+ <body>
+ <div id="scroll">
+ <div style="height: 20px"></div>
+ <div id="contain">
+ <div id="sticky"></div>
+ <div id="static"></div>
+ </div>
+ <div style="height: 100px"></div>
+ </div>
+ <script type="application/javascript">
+ document.getElementById("scroll").scrollTop = 21;
+ </script>
+ </body>
+</html>