how to set image as backgrond html code example

Example 1: html background image

<!-- Code by Scratchy -->
<!-- Twitter: @S_cratchy-->

<head>
  <style>
    body {
      background-image: url(https://wallup.net/wp-content/uploads/2019/09/110394-cats-grey-kittens-fluffy-fat-grass-animals-cat-kitten-baby-cute-748x468.jpg) 
    }
  </style>
  
  <body>
    You have set the background image!
    
    
    
  </body>

Example 2: how to make a picture your background on html

<html>
<body>

<h2>Background Image</h2>

<div style="background-image: url('img_girl.jpg');">