<!DOCTYPE html>
<html>
  <meta charset="utf-8">
  <title>CSS Position Test Reference: Test position:sticky element with large top in an overflow scroll container</title>
  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">

  <style>
  .scroll {
    border: 5px solid blue;
    overflow: auto;
    height: 200px;
    width: 200px;
    position: relative;
  }

  .block {
    width: 100%;
    height: 200px;
    background: 