how to make something fixed in css code example

Example 1: what are the types of positioning in css

The types of positioning in CSS are-
1)static: this is the default value.
2)sticky: the element is positioned based on the user's scroll position.
3)fixed: the element is positioned related to the browser window.
4)relative: the element is positioned relative to its normal position.
5)absolute: the element is positioned absolutely to its first positioned parent.

Example 2: html how to move element to the bottom right of page

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Test</title>
<style>
  #foo {
    position: fixed;
    bottom: 0;
    right: 0;
  }
</style>
</head>
<body>
  <div id="foo">Hello World</div>
</body>
</html>