how to set a background image in html and css code example

Example 1: css background image

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

Example 2: how to set background image in html

<!-- Add image by a HTML element: -->
<div style="background-image: url('img.jpg');">

<!-- Add image by a <style> element: -->
<style>
div {
  background-image: url('img.jpg');
}
</style>

<!-- Add to the entire body: -->
<style>
body {
  background-image: url('img.jpg');
}
</style>

Example 3: background css image

background-image: url('./image.jpg');