Check out example codes for "background image html". It will help you in understanding the concepts better.

Code Example 1

<!-- HTML -->
<div id="imageDiv"></div>

<!-- CSS -->
<style>
  #imageDiv {
	background-image: url('someimage.png');
  }
</style>

Code Example 2

how to make a image background

Code Example 3

<style>
body {
  background-image: url('img_girl.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
}
</style>

Code Example 4

background-image: url("image.png");
background-position: center;
background-repeat: no-repeat;
background-size: cover;

Code Example 5

<!-- 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>

Code Example 6

<!-- Background images are better implemented in CSS -->
<!-- but here is how you could do it in HTML in a pinch -->

<head>
  <style>
    .background {
      background-image: url(https://cleananddelicious.com/wp-content/uploads/2016/03/Avocad0-CD.jpg);
    }
  </style>
</head>

<body>
  <div class=background>
    <h1>The background of this div will be an avocado</h1>
  </div>
</body>

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