how to set background image position in css code example

Example 1: html static background

body {
  background-image: url("img_tree.gif");
  
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  
  background-size: cover;
}

Example 2: move css background image

background-image: url('w3css.gif');
 background-repeat: no-repeat;
 background-attachment: fixed;
 background-position: center;

Example 3: background position in html

background-position: right top;