css/css-overflow/overflow-body-propagation-007-ref.html

<!doctype html>
<html><head>
<meta charset="utf-8">
<title>CSS Reference: overflow-x:clip propagated from BODY</title>
<link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1635473">
<style>
  html { overflow: hidden auto; }
  body {
    width: 30px;
    height: 30px;
    padding: 10px;
    margin-left: 100px;
    margin-top: 100px;
  }

  div {
    position: relative;
    top: -20px;
    left: -40px;
    background: blue;
    height: 10000px;
    width: 10000px;
    border-right-width: 20px;
    border-right-style: solid;
    border-right-color: red;
  }
</style></head>
<body><div></div></body>
</html>