The CSS3
background-size property allows you to specify the size of background images.
Before CSS3, the size of a background image was the actual size of the image. CSS3 allows us to re-use background images in different contexts.
The size can be specified in lengths, percentages, or by using one of the two keywords: contain or cover.
<!DOCTYPE html>
<html>
<head>
<style>
#example1 {
border: 1px solid black;
background:url(img_flwr.gif);
background-repeat: no-repeat;
padding:15px;
}
#example2 {
border: 1px solid black;
background:url(img_flwr.gif);
background-size: 100px 80px;
background-repeat: no-repeat;
padding:15px;
}
</style>
</head>
<body>
<p>Original background-image:</p>
<div id="example1">
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.</p>
<p>Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.</p>
</div>
<p>Resized background-image:</p>
<div id="example2">
<h2>Lorem Ipsum Dolor</h2>
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.</p>
<p>Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.</p>
</div>
</body>
</html>
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