css 背景图像设置不平铺

编辑代码

<!DOCTYPE html>
<html>
<head>
<style>
body{
    background-image:url('/images/online_demo/img_tree.png');
    background-repeat:no-repeat;
}
</style>
</head>

<body>
<h1>Hello World!</h1>
<p>码农教程css 背景图像设置定位与不平铺</p>
<p>The background image is only showing once, but it is disturbing the reader!</p>
</body>

</html>