setting body background image size in css code example
Example 1: background image size css
#example1 {
background: url(mountain.jpg);
background-repeat: no-repeat;
background-size: auto;
}
#example2 {
background: url(mountain.jpg);
background-repeat: no-repeat;
background-size: 300px 100px;
}
Example 2: how to change background image in html
<style>
div {
background-image: url('img_girl.jpg');
}
</style>