css/css-overflow/overflow-body-propagation-010-ref.html

<!doctype html>
<html><head>
<meta charset="utf-8">
<title>CSS Reference: contain:paint on BODY with overflow:clip</title>
<link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1635473">
<style>
  body {
    margin-left: 100px;
    margin-top: 100px;
  }

  div {
    width: 50px;
    height: 50px;
    background: blue;
  }
</style></head>
<body><div></div></body>
</html>